Showing posts with label Perciformes. Show all posts
Showing posts with label Perciformes. Show all posts

Thursday, September 17, 2026

[Ichthyology • 2026] Neolamprologus labrosus • A New Species of the Genus Neolamprologus (Cichliformes: Cichlidae) from Lake Tanganyika


Neolamprologus labrosus
Takahashi, Snoeks & Satoh, 2026
 

Abstract
Lake Tanganyika harbours an exceptionally diverse fauna of cichlids that has arisen through explosive adaptive radiation. During a recent survey at Kasenga and Kombe, Zambia, we discovered an undescribed species of the genus Neolamprologus. The new species is readily distinguished from its congeners by its uniquely developed upper lip, which protrudes conspicuously beyond the lower lip, along with several additional morphological characters. Phylogenetic analysis of the mitochondrial NADH dehydrogenase subunit 2 gene showed that specimens of the new species were not recovered as monophyletic; instead, they formed a clade together with Neolamprologus mustax. Nevertheless, the new species is morphologically clearly distinct from N. mustax despite their sympatric occurrence. This discovery highlights the still underestimated diversity of cichlids in Lake Tanganyika and underscores the importance of documenting its fauna in the face of increasing anthropogenic pressures on the lake's ecosystem.

 Keywords: freshwater, biodiversity, mitochondrial ND2, morphology, phylogeny


Neolamprologus labrosus



Tetsumi Takahashi, Jos Snoeks and Shun Satoh. 2026. A New Species of the Genus Neolamprologus (Cichliformes: Cichlidae) from Lake Tanganyika. Journal of Fish Biology. DOI: doi.org/10.1111/jfb.70640 [15 September 2026]

Friday, January 16, 2026

[Ichthyology • 2025] Aepysomanthias & Poroanthias gen. nov., Pelontrus, Zalanthias, ... • A 40-year Taxonomic Enigma: Multigene Phylogeny Resolves the Polyphyly of Plectranthias (Perciformes: Anthiadidae) and supports A Revised Taxonomy


Plectranthias, Pelontrus, Sayonara, Xenanthias, Zalanthias, 
 Aepysomanthias and Poroanthias Tang & Chen gen. nov. 

in Tang et Chen, 2025.  
 
Abstract
Anthiadidae, a family of shallow and deep-water reef-associated fishes, include about 250 species distributed widely from tropical to temperate regions, with the majority found in the tropical Indo-West Pacific (IWP). Despite their broad distribution, the phylogeny and taxonomy of this family remain unresolved, particularly at the generic level, due to challenges in sampling from deep-water zones. Plectranthias, the most species-rich genus, has been suspected of non-monophyly since its last revision over 40 years ago. In this study, we explore the phylogenetic relationships of anthiadids using a multigene dataset (one mitochondrial and four nuclear genes) from 103 specimens across 19 genera, with a focus on IWP Plectranthias. Our results confirm the polyphyly of Plectranthias, revealing seven distinct clades. Based on this new phylogenetic framework and morphological re-examinations, we propose a taxonomic revision, including the resurrection of the genera Pelontrus, Sayonara, Xenanthias, and Zalanthias, and the establishment of Aepysomanthias and Poroanthias Tang and Chen gen. nov. The revised taxonomy restricts Plectranthias to 20 currently recognized species.
 
systematics, taxonomic revision, anthias, Indo-West Pacific, Tropical Deep-Sea Benthos, osteology, diagnostic characters, Serranidae, new genus


 


Chi-Ngai Tang and Wei-Jen Chen. 2025. A 40-year Taxonomic Enigma: Multigene Phylogeny Resolves the Polyphyly of Plectranthias (Perciformes: Anthiadidae) and supports A Revised Taxonomy. Zoological Journal of the Linnean Society. 205(3); zlaf148. DOI: doi.org/10.1093/zoolinnean/zlaf148 [11 November 2025]  

Thursday, January 15, 2026

[Ichthyology • 2025] Acentrogobius nigromaculatus • A New Species of Acentrogobius (Perciformes: Gobiidae) from the Indo-West Pacific, with a revised diagnosis for Acentrogobius suluensis (Herre 1927)


Acentrogobius nigromaculatus
 Koreeda & Motomura, 2025
 
「イッテンホホグロスジハゼ」DOI: doi.org/10.1007/s10228-025-01044-9

Abstract
The new gobiid species Acentrogobius nigromaculatus sp. nov., distributed in tropical and subtropical areas of the Indo-West Pacific region from Rodrigues Island (Mascarene Islands) to Japan, and previously misidentified as Acentrogobius suluensis (Herre 1927), is described, together with a revised diagnosis of A. suluensis. The new species is distinguished from all other congeners by the following combination of characteristics: dorsal-fin rays VI-I, 9 (rarely 10); anal-fin rays I, 9 (rarely 10); pectoral-fin rays 15–17; longitudinal scale series 26–32 (modally 29); transverse scales 9–12 (modally 10); pre-dorsal scales absent; first to fourth spines of first dorsal fin each with a filamentous tip (usually fourth spine longest; second and third spines of similar length; first spine shortest); head and nape naked; body mostly covered with ctenoid scales; cycloid or weakly ctenoid scales on thorax and just above pectoral-fin base; two brown stripes from just behind pectoral-fin base to caudal-fin base; five dark brown lateral blotches (rarely 6) on body, between lateral stripes; blue spots (sometimes indistinct) between and just above lateral stripes when fresh, but indistinct or absent on lateral blotches; black blotch on opercle; paired black spots on chin; single black spot on spine tip of second dorsal fin; longitudinal yellow (sometimes reddish-yellow) stripe on upper margin of caudal fin, just above longitudinal bluish stripe. The new species is similar to A. suluensis and Acentrogobius violarisi Allen 2015 in having a ladder-like lateral pattern on the body and a black blotch on the opercle but differs in having a naked pre-dorsal area, paired black blotches on the chin, a distinct black spot in the spine tip of the second dorsal fin, and yellow and blue stripes on the upper margin of the caudal fin, and lacking transverse red stripes and vertical black blotches laterally on the body.

Keywords: Taxonomy, Morphology, Yongeichthys, COI mt DNA


Acentrogobius nigromaculatus sp. nov. 
(New English name: Spotted Ladder Goby; 
new standard Japanese name: Itten-hohoguro-suji-haze)

Etymology. The specific name “nigromaculatus” and part of the Japanese name “Itten” refer to the single black spot on the spine tip of the second dorsal fin.


Reo Koreeda and Hiroyuki Motomura. 2025. A New Species of Acentrogobius (Perciformes: Gobiidae) from the Indo-West Pacific, with a revised diagnosis for Acentrogobius suluensis (Herre 1927).   Ichthyological Research. DOI: doi.org/10.1007/s10228-025-01044-9 [21 November 2025]

【博物館・連合農学研究科】点があります。イッテンホホグロスジハゼ

Sunday, January 11, 2026

[Ichthyology • 2026] ‘Geophagus’ pirangaensis • A New endemic pearl cichlid of the ‘Geophagus’ brasiliensis (Cichliformes: Cichlidae) species group from the Piranga River, upper Doce River Basin, southeastern Brazil

 

‘Geophagus’ pirangaensis  Assis, Dergam & Henschel, 

in Assis, Dergam, Cunha, Machado, Hrbek, Vicente, Queiroz et Henschel, 2026

Abstract
A new species of pearl cichlid of the ‘Geophagus’ brasiliensis species group, endemic to the Piranga River, a major tributary of the upper Doce River basin in the state of Minas Gerais, southeastern Brazil, is herein described. The new species is delimited using an integrative approach, with molecular-based species delimitation methods coupled with morphological diagnosis. For this, we developed a matrix containing 27 sequences of the mitochondrial gene cytochrome c oxidase subunit I (COI) of species of the ‘G.’ brasiliensis species group obtained from GenBank and three new sequences generated in this work. The species delimitation method applied to the morphological characters was Population Aggregation Analysis (PAA), and the species delimitation methods applied to the nucleotide sequences were the branch coalescence methods: Bayesian Poisson Tree Processes (bPTP), General Mixed Yule Coalescent (GMYC) single-threshold and GMYC multi-threshold. The three molecular-based species delimitation methods corroborate that the haplotypes of ‘Geophagus’ from the Piranga River represent a new species distinguished from all other in the ‘G.’ brasiliensis species group by exclusive presence of clear, rounded spots in the posteriormost dorsal-fin rays in fixed adult specimens, and the combination of the following morphological characters: long snout (46.22%–52.74% of head length), tall head (94.08%–101.15% of head length), terminal mouth, 25 or 26 longitudinal scales on the E0 series, 14 or 15 spines on the dorsal fin, absence of bluish dots on the most anterior soft rays of the anal fin in live specimens and absence of bluish and longitudinal lines in the basal region of the caudal fin of live specimens. This work is the first description of a new species of the ‘G.’ brasiliensis species group from the Doce River basin.

Keywords: Atlantic forest, fish taxonomy, freshwater fish, Geophagini, integrative taxonomy, mitochondrial DNA

‘Geophagus’ pirangaensis, new species from Piranga River, upper Doce basin, Ponte Nova municipality, Minas Gerais, Brazil:
top, MZUFV13723, live subadult specimen, 63.61 mm SL, collected by E. Henschel and photographed by C.E. de Assis;
bottom, MZUFV14666, live adult specimen, 96.21 mm SL, collected by C.E. de Assis and photographed by E. Henschel.
Scale bar: 10 mm.

‘Geophagus’ pirangaensis sp. n. Assis, Dergam & Henschel

 Diagnosis: ‘G.’ pirangaensis possess a unique diagnostic feature within the ‘G.’ brasiliensis group characterized by the presence of clear, rounded spots in the posteriormost dorsal-fin rays of fixed adult specimens (vs. absence, or, when present, spots are elliptical). It also differs from ‘G.’ brasiliensis by having a considerably longer snout (46.22%–52.74% HL vs. 38.36% HL) and terminal mouth (vs. subdorsal); from ‘G.’ diamantinensis by having a taller head (94.08%–101.15% HL vs. 77–86% HL) and terminal mouth (vs. subterminal); from ‘G.’ iporangensis by having a caudal fin with a rounded distal margin (vs. straight distal caudal-fin margin) and 25 or 26 longitudinal scales in the E0 series (vs. 27 or 28); from ‘G.’ itapicuruensis by having a dark and rounded mid-lateral spot of live specimens (vs. dark and vertically elliptical mid-lateral spot) and 14 or 15 spines on the dorsal fin (vs. 13); from ‘G.’ multiocellus by the absence of small bright spots in the central region of the bluish spots on the caudal fin of living specimens (vs. presence) and terminal mouth (vs. subterminal); from ‘G.’ obscurus by having small bluish spots in the opercular region of living specimens (vs. large bluish spots in the opercular region); from ‘G.’ rufomarginatus by the absence of bluish dots on the most anterior soft rays of the anal fin of living specimens (vs. presence), presence of denticles on gill rakers of the first branchial arch (vs. absence) and terminal mouth (vs. subterminal); and from ‘G.’ santosi by the absence of bluish and longitudinal lines in the basal region of the caudal fin of living specimens (vs. presence) and terminal mouth (vs. subterminal).


Cidimar E. de Assis, Jorge A. Dergam, Amanda F. Cunha, Valéria N. Machado, Tomas Hrbek, Natállia M. de F. Vicente, Victor de Queiroz and Elisabeth Henschel. 2026. A New endemic pearl cichlid of the ‘Geophagus’ brasiliensis (Cichliformes: Cichlidae) species group from the Piranga River, upper Doce River Basin, southeastern Brazil. Journal of Fish Biology. DOI: doi.org/10.1111/jfb.70324 [05 January 2026]  

Wednesday, December 24, 2025

[Ichthyology • 2025] Sayonara flavolineata • A New Deep-water anthiadid perchlet (Perciformes: Anthiadidae) from Vietnam


 Sayonara flavolineata
Tang, Vo & Gill, 2025

  RAFFLES BULLETIN OF ZOOLOGY. 73; 

Abstract
 A new species of deep-water anthiadid perchlet, Sayonara flavolineata, is described from seven specimens collected off Nha Trang, southeastern Vietnam. Based on morphological features, it is assigned to a recently resurrected genus Sayonara Jordan & Seale, 1906, a former junior synonym of Plectranthias. Sayonara flavolineata, new species is distinctive in having yellow and reddish orange stripes when fresh, a horizontal dusky stripe in the middle of spinous dorsal fin, and a slightly concave dorsal profile of the head. It is further distinguished from other anthiadids by the following combination of characters: dorsal-fin rays X, 15; pectoral-fin rays 15–16; branched caudal-fin rays 8+7; lateral-line scales 31–35; circumpeduncular scales 12; predorsal scales extending anteriorly to posterior nostrils; body scales bearing basal cteni; scales present on maxilla, infraorbital, and mandibles; presence of trisegmental pterygiophores in both dorsal and anal fins; and two supraneurals. We updated and revised the record of species previously classified under Plectranthias in Vietnam. Including the new species, five species are now known from Vietnam and are reclassified to recently resurrected genera including Sayonara, Xenanthias, and Zalanthias.

Key words. taxonomy, species diversity, Plectranthias

Fresh colouration of Sayonara flavolineata, new species.
 A, holotype, OIM-E.55852 (field code: Q.01204-2), 101.1 mm SL; B, paratype, NMMB-P 41621 (field code: Q.01204-1), 107.9 mm SL.
Photos by Q. V. Vo.


CHI-NGAI TANG, QUANG VAN VO & ANTHONY C. GILL. 2025. Sayonara flavolineata (Perciformes: Anthiadidae), A New Deep-water anthiadid perchlet from Vietnam.  RAFFLES BULLETIN OF ZOOLOGY. 73; 698–708.

Monday, December 22, 2025

[Ichthyology • 2025] Liopropoma terecaudum • A New liopropomine basslet (Perciformes: Epinephelidae) from northern Taiwan


Liopropoma terecaudum 
 Tang, Lai & Ho, 2025


Abstract
Liopropoma terecaudum sp. nov. is described based on 12 specimens collected off northern Taiwan. The new species most closely resembles two sympatric species, L. japonicum and L. dorsoluteum, but differs from both species and all other congeneric species of Liopropoma based on the following combination of morphological and colouration characters: caudal fin round; dorsal-fin elements VIII, 13 and lacking a distinct notch; lateral side of body with a broad red stripe; base of caudal fin with a large red blotch. Phylogenetic analysis of mitochondrial DNA barcode sequences places L. terecaudum in a clade with L. dorsolutum and L. japonicum. The average genetic divergences between L. terecaudum and L. dorsoluteum, and between L. terecaudum and L. japonicum, are measured to be 11.8% and 11.9%, respectively. The description of L. terecaudum brings the total number of Liopropoma in Taiwanese waters to 11.

Keywords: deep reefs, Ichthyology, integrative taxonomy, species diversity

Fresh colouration of Liopropoma terecaudum sp. nov.:
 (a) holotype, NMMB‐P34155, 146.6 mm SL; (b) NMMB‐P34205, paratype, 142.5 mm SL; (c) NMMB‐P34204, paratype, 140.8 mm SL.

Liopropoma terecaudum sp. nov. 


Chi-Ngai Tang, Nok-Wai Lai, Hsuan-Ching Ho. 2025. Description of A New liopropomine basslet, Liopropoma terecaudum, from northern Taiwan (Perciformes: Epinephelidae). Journal of Fish Biology. 107(3); 902-917. DOI: doi.org/10.1111/jfb.70086 [29 May 2025]

Saturday, November 29, 2025

[Ichthyology • 2025] Vanderhorstia supersaiyan • A New Species of Vanderhorstia (Perciformes: Gobiidae) from the twilight zone off Ishigaki-jima Island, Okinawa, Japan


Vanderhorstia supersaiyan 
Koeda, Hirasaka & Sato, 2025 

Supersaiyan Goby  ||  DOI: doi.org/10.1007/s10228-025-01047-6 

Abstract
Vanderhorstia supersaiyan sp. nov. (Perciformes: Gobiidae) is described from a single specimen (77.0 mm in standard length) collected from 210 m depth off Ishigaki-jima Island, Okinawa, Japan. The new species has two distinct yellow longitudinal stripes on the second dorsal, anal, and caudal fins, which are unique features within the genus. The new species can also be clearly distinguished from congeners by other coloration features, including faint yellow spots on the head and dorsal body margin, distinct yellow blotches and yellow upper margin on the first dorsal fin, and four faint yellowish-brown diamond-shaped blotches laterally on the body. A combination of meristic and morphometric characters also set the new species apart from congeners, all of which inhabit significantly shallower depths. The study documents a new discovery in the twilight zone highlighting the value of advancing research in this little studied habitat.

Keywords: Vanderhorstia vandersteene, Vanderhorstia attenuate, Gobioidei, Twilight zone, Taxonomy, Ryukyu Archipelago

Images of the holotype of Vanderhorstia supersaiyan sp. nov., NSMT-P 151096, 77.0 mm SL, collected from off Ishigaki-jima Island, Yaeyama Islands, Okinawa, Japan; just after captured and fresh.

Vanderhorstia supersaiyan sp. nov.
(New English name: Supersaiyan Goby; 
new standard Japanese name: Ereki-haze)

Etymology. The specific name of the new species, supersaiyan, refers to "Super Saiyan", a fictional transformation from the “Dragon Ball” manga series, famous for its golden yellow hair and glowing aura. In the present context, it refers to the unique bright yellow stripes and blotches of the new species. It is treated as a noun in apposition.


 Keita Koeda, Hiroshi Hirasaka and Mao Sato. 2025. Vanderhorstia supersaiyan sp. nov. (Perciformes: Gobiidae) collected from the twilight zone off Ishigaki-jima Island, Okinawa, Japan. Ichthyological Research. DOI: doi.org/10.1007/s10228-025-01047-6 [27 November 2025]

新種の魚を発見!その名もスーパーサイヤン! ~石垣島沖から採集された新種のハゼに小枝助教らが命名~
 

Saturday, September 20, 2025

[Ichthyology • 2025] Upeneus alama & U. brevianalis • Two New Goatfish Species of the Upeneus sulphureus Species Group (Syngnathiformes: Mullidae), with a Redescription of U. sulphureus Cuvier, 1829 and a Review of Barbel Length in the Genus


(A, B) Upeneus alama: Philippines, Manila Bay, Cavite;
(C) U. brevianalis, Thailand, Andaman Sea, Phuket; 
(D) U. doriae: Persian/Arabian Gulf, Bahrain;
(F, G) U. nigromarginatus: (F) Philippines, Negros Oriental, Dumaguete Citz; (G) Philippines, Panay Island, Tigbauan market near Iloilo City. 

Upeneus sulphureus Cuvier, 1829. (A, B) Thailand, Gulf of Thailand, Prachuab Khiri Khan Province; (C) Philippines, Metro Manila; (D) Vietnam, Ha Long Bay.  

in Uiblein, Motomura, Møller, Sabaj, Boonphienphol, Hoang et Parkinson, 2025. 

 Abstract 
For the goatfish genus Upeneus, the new sulphureus-species group is established, which includes five species, U. doriae, U. nigromarginatus, U. sulphureus, and the two new species, U. alama and U. brevianalis. This taxonomic group differs from the other seven species groups and four ungrouped species of this genus in the following combination of characters: 8 dorsal-fin spines, 14–17 pectoral-fin rays, 25–33 total gill rakers, 32–37 lateral-line scales, and lack of bars on caudal fin. Upeneus sulphureus is redescribed based on examination of a large set of morphometric, meristic, and color characters in 211 specimens, which revealed a bimodal distribution in barbel length prompting separation into short- and long-barbel morphs. This bimodality was neither sex-, size-, nor population-dependent, but found in co-occurring individuals of U. sulphureus in many areas of its distributional range from East Africa to Japan. The two new species differ from all other congeners primarily in U. alama, new species, having longer barbels (28–30% SL) and U. brevianalis, new species, having a shorter and shallower anal fin (8.1 and 12% SL, respectively) as well as a broad, dark-brown vertical band along the anterior third of the first dorsal fin. For U. nigromarginatus, new records from Papua New Guinea, Indonesia (West Papua), and three areas of the Philippines north of Mindanao are reported. For U. doriae, U. sulphureus, and Mulloides pinnivittatus, the latter a junior synonym of U. sulphureus, lectotypes are designated. An updated account for the genus Upeneus is provided. The barbel-length data of all 53 species of Upeneus are reviewed, and the finding of a wide range combined with a distinct dimorphism of this character in U. sulphureus is discussed.

Upeneus sulphureus.
 (A, B) KAUM-I.33094, SBM, 119 mm SL, Thailand, Gulf of Thailand, Prachuab Khiri Khan Province (H. Motomura); (C) USNM 403094, SBM, 105 mm SL, Philippines, Metro Manila (copyright J. T. Williams); (D) KAUM-I.67460, SBM, 90 mm SL, Vietnam, Ha Long Bay (H. Motomura);
(E, F): SAIAB 82237, LBM, 106 mm SL, Mozambique (E: copyright O. Alvheim, F: copyright P. C. Heemstra);
(G, H) KAUM-I.57209, LBM, 91 mm SL, Philippines, Panay Island, Iloilo City (H. Motomura); (I, J) KAUM-I.123161, LBM, 99 mm SL, Japan, Kagoshima, NE of Matsushima (H. Motomura). 

(A, B) Upeneus alama: (A) USNM 466258, HT, 117 mm SL, Philippines, Manila Bay, Cavite (copyright D. Pitassy); (B) USNM 466258, PT, 125 mm SL, same locality (copyright D. Pitassy);
(C) U. brevianalis, ZMUC P49375, HT, 137 mm SL, Thailand, Andaman Sea, Phuket (F. Uiblein); 
(D, E) U. doriae: (D): USNM FIN 31104 (unvouchered photograph), 106 mm SL, Persian/Arabian Gulf, Bahrain (copyright J. E. Randall); (E) ZMB 7056, LT, 104 mm SL, Iran, Persian/Arabian Gulf, Bandar Abbas (copyright E. Aßel);
(F, G, H) U. nigromarginatus: (F) USNM 403319, 159 mm SL, Philippines, Negros Oriental, Dumaguete Citz (copyright J. T. Williams); (G) VNMN-I 1986 (unvouchered image), ca. 70 mm SL, Philippines, Panay Island, Tigbauan market near Iloilo City (F. Uiblein); (H) AMS I.18495-001, 88 mm SL, Papua New Guinea, Madang Province, Broken Water Bay (K. Parkinson).  

Upeneus alama Uiblein and Motomura, new species
Cavite Goatfish
  
Diagnosis.—Dorsal fins VIII + 9; pectoral fins 16; gill rakers 8–9 upper + 20–22 lower = 28–31 total; lateral-line scales 33; body moderately deep; measurements as % SL: body depth at anal-fin origin 25–28; maximum head depth 26; head depth through eye 22; suborbital depth 14; head length 34; snout length 13; postorbital length 14; upper-jaw length 15; barbel length 28–30; barbel width 1.6–1.7; caudal-peduncle length 21–22; second dorsal-fin base length 14; caudal-fin length 28–32; length of anal-fin base 9.8–9.9; anal-fin height 15–17; pelvic-fin length 20; pectoral-fin length 28; pectoral-fin width 5.5–5.9; first dorsal-fin height 24–25; first two or three long dorsal-fin spines protruding; second dorsal-fin height 17; caudal fin without bars; first dorsal fin with black tip, retained in preservative; preserved fish with silvery-whitish head, pale brown body ventrally and dark brown dorsally; fins except for first dorsal-fin tip pale brown, partly hyaline; barbels very long, pale.

Etymology.—The new species name “alama” is used as a noun in apposition and honors the late Mr. Ulysses Banga Alama (1959–2023), who was employed at the College of Fisheries and Ocean Sciences, University of the Philippines Visayas, Miagao, Iloilo, Philippines, and manager of the UPVM fish collection, to commemorate his contributions to marine ichthyology.


Upeneus brevianalis Uiblein and Boonphienphol, new species
 Phuket Goatfish
 
Diagnosis.—Dorsal fins VIII + 9; pectoral fins 16; gill rakers 8 upper + 20 lower = 28 total; lateral-line scales 31–32; body moderately deep; measurements as % SL: body depth at anal-fin origin 23; maximum head depth 27; head depth through eye 21; suborbital depth 14; head length 33; snout length 13; postorbital length 14; upper-jaw length 14; barbel length 20; barbel width 1.5; caudal-peduncle length 19; second dorsal-fin base length 15; caudal-fin length 31; length of anal-fin base 8.1; anal-fin height 12; pelvic-fin length 20; pectoral-fin length 26; pectoral-fin width 6.0; first dorsal-fin height 23, first five long dorsal-fin spines slightly protruding; second dorsal-fin height 17; caudal fin without bars; anterior third of first dorsal fin forming a broad, dark-brown vertically oriented band, becoming slightly wider dorsally; head and body pale brown to brown, belly lighter; paired and anal fins pale hyaline; barbels pale to pale brown.

Etymology.—The new species name “brevianalis” refers to the short anal fin, an important diagnostic character of this species.


Franz Uiblein, Hiroyuki Motomura, Peter R. Møller, Mark Sabaj, Supasit Boonphienphol, Tuan A. Hoang and Kerryn Parkinson. 2025. Two New Goatfish Species of the Upeneus sulphureus Species Group (Mullidae), with a Redescription of U. sulphureus Cuvier, 1829 and a Review of Barbel Length in the Genus. Ichthyology & Herpetology. 113(3); 453-486. DOI: doi.org/10.1643/i2024094 (22 August 2025)  
 

Wednesday, August 20, 2025

[Ichthyology • 2025] Micropterus pucpuggy & M. calliurus • Two New Species of Micropterus (Centrarchiformes: Centrarchidae) endemic to Atlantic Slope river drainages in Georgia, South Carolina and North Carolina, U.S.A.

 

Micropterus pucpuggy
Micropterus calliurus
Freeman & Freeman

in Freeman, Scott, Petersen, Bayona-Vásquez, Taylor, Hilburn, Freeman et Wares, 2025.

Abstract
We describe as new species Micropterus pucpuggy Freeman & Freeman (Bartram’s Bass), sp. nov., and Micropterus calliurus Freeman & Freeman (Altamaha Bass), sp. nov., which occur allopatrically in four river systems draining the Atlantic Slope of the southeastern United States. In recent decades, biologists and anglers have acknowledged the existence of these two distinctive taxa of black bass, both of which were previously considered synonymous with M. coosae Hubbs & Bailey (Redeye Bass). However, introgression with non-native congeners that have been widely introduced for sport-fishing (including M. henshalli Hubbs & Bailey and M. dolomieu Lacepède) has confounded formal description of M. pucpuggy and M.calliurus. We examined mitochondrial (mtDNA) and nuclear gene sequences of candidate type-specimens of M. pucpuggy and M. calliurus. We then used reduced-representation, short-read sequencing of candidate types along with specimens of six other Micropterus species to identify a series of non-introgressed individuals for each of the two new species. Micropterus pucpuggy and M. calliurus are each reciprocally monophyletic in both mitochondrial and RADseq phylogenies and are diagnosable from all other Micropterus species and from each other in chromatic fin coloration, body pigmentation, and other morphological attributes.

Pisces, Redeye Basses, Micropterus coosae, Black Basses, Altamaha Bass, Bartram’s Bass

(A, B) Holotype of Micropterus pucpuggy sp. nov. (GMNH Catalog no. 69437, 194.5 mm SL; A, in life; B, in alcohol).
(C, D) Holotype of Micropterus calliurus sp. nov. (GMNH Catalog no., 54394, 176.6 mm SL; C, in life; D, in alcohol).
(E) M. pucpuggy paratopotype (GMNH Catalog no. 69439, 217.5 mm SL). (F, G) M. pucpuggy x M. henshalli hybrids from (F) same locale as holotype (GMNHTC 16663, 222 mm SL) and (G) from Chauga River (GMNHTC 16748, 161.5 mm SL).
(H, I, J) Micropterus calliurus paratypes from Little River (H; GMNH Catalog no. 53907, 129.8 mm SL), Jack’s Creek (I; NCSM 117010, 120.25 mm SL), and Tobesofkee Creek (J; GMNH Catalog no. 69454, 182.25 mm SL). Asterisks denote holotypes.


Micropterus pucpuggy Freeman & Freeman (Bartram’s Bass), sp. nov., 
Micropterus calliurus Freeman & Freeman (Altamaha Bass), sp. nov.,


Byron J. FREEMAN, Mark C. SCOTT, Kelly N. PETERSEN, Natalia J. BAYONA-VÁSQUEZ, Andrew T. TAYLOR, Bryson G. HILBURN, Mary C. FREEMAN and John P. WARES. 2025. Two New Species of Micropterus (Centrarchidae) endemic to Atlantic Slope river drainages in Georgia, South Carolina and North Carolina, U.S.A. Zootaxa. 5683(1); 67-89. DOI: doi.org/10.11646/zootaxa.5683.1.3  [2025-08-19]

Friday, July 25, 2025

[Ichthyology • 2025] Rypticus africanus • Integrative Taxonomy reveals A New Species of the Soapfish Genus Rypticus (Perciformes: Grammistidae) from the eastern Atlantic Ocean

 

Rypticus africanus   
 Araujo, Sampaio, Rocha & Ferreira, 2025

African soapfish | Peixe sabão africano  ||  DOI: doi.org/10.1111/jfb.70132 

Abstract
A new species of the soapfish genus Rypticus is described based on 14 specimens from the eastern Atlantic Ocean. The new species was previously misidentified as the greater soapfish, R. saponaceus, due to their similar appearance. However, it differs from R. saponaceus in several key characteristics, including a comparatively shorter head, snout and upper jaw, and a deeper body. Molecular data, obtained from the mitochondrial cytochrome oxidase I gene, strongly suggest the monophyly of the new species and support its description as new.

Keywords: Biogeography, cryptic species, DNA barcode, Gulf of Guinea, Isthmus of Panama, reef fish


(a–c) Rypticus africanus from São Tomé and Príncipe, illustrating the variation in colour pattern between individuals: (a) São Tomé Island, (b, c) Príncipe Island
and (d) R. saponaceus from Salvador, Bahia, Brazil, shown for comparison.

Rypticus africanus Araujo, Sampaio, Rocha & Ferreira, new species

English proposed common name: African soapfish.
Portuguese (São Tome and Príncipe) proposed common name: Peixe sabão africano.

Diagnosis: A species of Rypticus distinguished from its congeners by the following unique combination of characters: dorsal-fin spines always three vs. two/typically two in Rypticus bistrispinus (Mitchill 1818), Rypticus bornoi Beebe & Tee-Van 1928, Rypticus courtenayi McCarthy 1979, Rypticus maculatus Holbrook 1855, and R. nigripinnis, and almost always four in Rypticus carpenteri Baldwin & Weigt, 2012; head length 30.0%–35.3% of SL (average 33.5%) vs. 35.0%–39% (average 36.88%) in R. bicolor; body depth 34.2%–40.5% of SL (average 36.2%) vs. 26%–34% (average 30.0%) in Rypticus randalli Courtenay, 1967; body brown to dark grey, with the head and sides displaying numerous or sparse pale, spots of variable size vs. lighter background coloration with several widely scattered small dark spots; head shorter than body depth vs. head larger than body depth in R. saponaceus.

Etymology: The specific name africanus is given for the known distribution of the new species and its probable widespread distribution off the coast of west Africa.


Gabriel Soares Araujo, Cláudio L. S. Sampaio, Luiz A. Rocha and Carlos Eduardo Ferreira Leite. 2025. Integrative Taxonomy reveals A New Species of the Soapfish Genus Rypticus (Teleostei: Grammistidae) from the eastern Atlantic Ocean. Journal of Fish Biology. DOI: doi.org/10.1111/jfb.70132 [21 July 2025]

Friday, June 6, 2025

[Ichthyology • 2025] Labrochromis mawe & L. mawepili • Two New Cichlid Species of the Genus Labrochromis (Perciformes: Cichlidae) from Rocky Reefs of Lake Victoria, Tanzania


[A-C] Labrochromis mawe
[G-I] Labrochromis mawepili
Mahulu & Seehausen, 2025 
  

Abstract
Lake Victoria is home to a unique and taxonomically understudied species flock of endemic haplochromine cichlid fishes, with many morphologically specialized trophic groups and many different species in each of them. One of several mollusk-eating trophic groups are the pharyngeal snail-crushers of the genus Labrochromis Regan, 1920. Currently, six species from Lake Victoria have been described in this genus, none of which occupies rocky shores and reefs. Rocky shores and reefs of Lake Victoria, however harbor rich assemblages of habitat-specialized cichlids and these include snail-crushers. Here two new species of Labrochromis are described from this habitat in the Southeastern part of Lake Victoria. These species are distinct in their ecology, morphology, and male nuptial coloration from all previously described Labrochromis species, and they are distinct from each other in oral dentition, morphology, and stripe pattern. These species are named Labrochromis mawe sp. nov. and Labrochromis mawepili sp. nov. Both are currently only known from the Mwanza and Speke Gulf regions of the lake in Tanzania.

Key words: Haplochromine, Mwanza Gulf, pharyngeal crusher, Speke Gulf, taxonomy

 A male Labrochromis mawe sp. nov. blue morph Python Island B male L. mawe sp. nov. red morph Python Island and C female L. mawe sp. nov. Python Island
D, E two males L. mawe sp. nov. Kissenda island and F female L. mawe sp. nov. Kissenda Island

G, H two males Labrochromis mawepili sp. nov. Makobe island and I female L. mawepili sp. nov. Makobe island.

 Labrochromis mawe sp. nov.

Etymology. Species name mawe from the Swahili word, for stone, referring to the habitat occupation of the species that is confined to rocks.

 Labrochromis mawepili sp. nov.

Etymology. Species name mawepili, from Swahili, mawe means stone and pili means second. Refers to similarity in habitat association between this species and L. mawe and the superficial resemblance with the latter.


 Anna Mahulu and Ole Seehausen. 2025. Two New Cichlid Species of the Genus Labrochromis from Rocky Reefs of Lake Victoria, Tanzania (Perciformes, Cichlidae). ZooKeys 1240: 117-137. DOI: doi.org/10.3897/zookeys.1240.125699

Thursday, April 10, 2025

[Ichthyology • 2025] Hypoplectrus espinosai (Teleostei: Serranidae) • A New hamlet on Coral Reefs in the southwestern Gulf of Mexico


Phenotypic variation of Hypoplectrus espinosai 
Puebla, Aguilar-Perera, Robertson & Domínguez-Domínguez, 
 
  in Puebla, Aguilar-Perera, Helmkampf, Robertson, C.J. Estapé, A.M. Estapé et Domínguez-Domínguez, 2025
Photographs from Alacranes reef by Carlos and Allison Estapé (a, b, c, d), Isai Dominguez Guerrero (e), and Alfonso Aguilar-Perera (f).

Abstract
The hamlets (Hypoplectrus spp., Teleostei: Serranidae) are a group of small predatory reef-associated fishes endemic to the tropical northwestern Atlantic that are characterized by an exceptionally high diversification rate. Currently 18 species are recognized, with seven described or redescribed in the last 14 years. Here, we describe the Campeche Bank hamlet, Hypoplectrus espinosai sp. nov. As indicated by its common name, this species is distributed throughout the Campeche Bank in the southwest Gulf of Mexico. Hypoplectrus espinosai sp. nov. differs from two similar hamlets, the butter hamlet H. unicolor (Walbaum) and the Veracruz hamlet H. castroaguirrei Del Moral Flores, Tello-Musi & Martínez-Pérez in terms of geographic distribution and color pattern. Furthermore, phylogenetic and population genetic analyses based on whole-genome data from 68 individuals indicate that H. espinosai sp. nov. is genetically distinct from H. unicolor and H. castroaguirrei.

Pisces, Gulf of Mexico, Campeche Bank, Serranidae, reef fishes, hamlets, Hypoplectrus

Phenotypic variation of Hypoplectrus espinosai sp.  nov. A black saddle blotch covers the caudal  peduncle  and extends over the posterior part of the body, sometimes over the posterior border of the dorsal fin. Note the consistency of the thin vertical lines.
Photographs from Alacranes reef by Carlos and Allison Estapé (a, b, c, d), Isai Dominguez Guerrero (e), and Alfonso Aguilar-Perera (f).

Hypoplectrus espinosai sp. nov. Puebla, Aguilar-Perera, Robertson & Domínguez-Domínguez 2025 
English common name: Campeche Bank hamlet 
Spanish common names: mero del Banco de Campeche (AFS), vaca del Banco de Campeche (FAO), hamlet del Banco de Campeche (vernacular) 

Diagnosis. Hypoplectrus  espinosai sp.  nov. is distinguished  from  all named congeners  by  coloration. Body white with thin vertical lines but no bars (or very faint). Black spot on snout surrounded by electric blue lines. Caudal peduncle entirely covered by black saddle blotch, which extends over posterior part of body, and sometimes over posterior part of dorsal fin. Black saddle blotch is more extensive than in H. unicolor. Black eye-mask characteristic of H. castroaguirrei absent.

Etymology. We assign the species name espinosai sp. nov. in honor of Héctor Salvador Espinosa Pérez (1954–2022), a dedicated Mexican ichthyologist, founder of the Mexican Ichthyological Society and curator of the Mexican National Fish Collection. The common name refers  to  the  geographic distribution of the species, the  Campeche Bank off the north coast of the Yucatan Peninsula in the southwestern Gulf of Mexico, Mexico.


Oscar PUEBLA, Alfonso AGUILAR-PERERA, Martin HELMKAMPF, D. Ross ROBERTSON, Carlos J. ESTAPÉ, Allison Morgan ESTAPÉ and Omar DOMÍNGUEZ-DOMÍNGUEZ. 2025. Hypoplectrus espinosai sp. nov. (Teleostei: Serranidae), A New hamlet on Coral Reefs in the southwestern Gulf of Mexico. Zootaxa. 5618(4); 509-524. DOI: doi.org/10.11646/zootaxa.5618.4.3 [2025-04-04]

Wednesday, February 12, 2025

[Ichthyology • 2025] Branchiostegus sanae • A New Species of Deepwater Tilefish (Eupercaria: Branchiostegidae) from the South China Sea

 

Branchiostegus sanae  
Huang, Chen, Ke & Zhang, 2025
幽灵方头鱼  |  Mononoke tilefish |  DOI: doi.org/10.3897/zookeys.1227.130512

A) B. ablus B) B. argentatus C) B. auratus D) B. biendong E) B. japonicus. 

Abstract
A new species of deepwater tilefish, Branchiostegus sanae sp. nov., is described based on five specimens collected from the area between the Xisha Islands and Hainan Island, China. This species can be distinguished from congeners by its unique cheek marker and a combination of characteristics. Among the tilefish species known to be distributed in the South China Sea, this species is the only one with vertical stripes on the body. Based on the COI, CytB, and 12S sequences, a maximum-likelihood phylogenetic tree shows that the B. sanae sp. nov. forms a separate clade and is the sister group to the clade consisting of B. sawakinensis, B. albus, B. argentatus, B. biendong, B. japonicus, B. auratus, and B. okinawaensis. A key to the genus Branchiostegus is also compiled.

Key words: Bottom fish, Hainan, Malacanthidae, phylogeny, taxonomy
 

 Branchiostegus sanae sp. nov. 
New standard Chinese common name: 幽灵方头鱼
New English common name: Mononoke tilefish

Diagnosis. The species can be distinguished from its congeners in having the following combination of characteristics: a unique white-red bar between the orbit and upper jaw; distal end of upper jaw vertical reaching or exceeding midpoint of orbit; yellow predorsal ridge with dark rim; dorsal fin membrane translucent greyish, with spines darker; dorsal fin spines grey and soft rays yellow; about 16 dark vertical stripes on each side; longest dorsal fin soft ray long, 20.6–22.7% in SL; no black spots on base of scales; and caudal fin nearly truncated, upper part pale orange mixed with yellow stripes, and lower part dark grey with inconspicuous yellow blotch near base.

Etymology: The name sanae refers to the heroine’s name, San in Hayao Miyazaki’s film Princess Mononoke, who has similar red under-eye stripes to this species and symbolizes the ideas and appeals of harmonious coexistence between man and nature that we want to share (Miyazaki 1997).

Common name: Both the Chinese and English common names of this species are derived from the title of the film and align with the common name used by Chinese fishermen, “鬼马头鱼” (Ghost horsehead fish), due to the unusual cheek patterns of this species.

Species of the genus Branchiostegus in Chinese waters except B. sanae
A) B. ablus B) B. argentatus C) B. auratus D) B. biendong E) B. japonicus.  

Branchiostegus sanae at a seafood market.
photo: Jiangyuan Chen


 Haochen Huang, Jingxuan Chen, Zhixin Ke and Chi Zhang. 2025. Branchiostegus sanae, A New Species of Deepwater Tilefish (Eupercaria, Branchiostegidae) from the South China Sea. ZooKeys 1227: 129-142. DOI: doi.org/10.3897/zookeys.1227.130512