[Ichthyology • 2019] Mystus prabini • A New Species of Catfish (Siluriformes: Bagridae) from Arunachal Pradesh, north-eastern, India

Mystus prabini 

Darshan, Abujam, Humar, Parhi, Singh, et al. 2019

  DOI: 10.11646/zootaxa.4648.3.6

Abstract

Mystus prabini, new species, is described from the Sinkin and the Dibang River in the Lower Dibang Valley District of Arunachal Pradesh, India. The new species differs from all South-Asian congeners except M. bleekeri, M. cavasius, M. zeylanicus,  M. falcarius, M. seengtee, M. cineraceus, M. ngasep, M. rufescens and M. ankutta in having a long adipose fin that reaches anteriorly (vs. distinctly does not reach) the base of the last dorsal-fin ray. The new species can be distinguished from the named nine species in having (vs. lacking) a narrow black mid-lateral stripe extending from the anterior region of tympanic spot to the rounded black spot at the caudal-fin base. The analysis of mitochondrial cytochrome c oxidase subunit I (COI) gene sequence shows that the K2P value between Mystus prabini and all other Mystus species ranges from 8.6–22.1%. Mystus prabini is closest genetically to M. bleekeri and M. albolineatus, from which species it has a genetic distance of 8.6% and 13.9%, respectively. The genetic distance (K2P) between the new species and M. dibrugarensis is 21.1%.  

Keywords: Pisces, DNA barcoding, Mystus, New species, Brahmaputra basin

Achom Darshan, Santoshkumar Abujam, Ram Humar, Janmejay Parhi, Yambem Suresh Singh , Waikhom Vishwanath, Debangshu Narayan Das and Pramod Kumar Pandey. 2019. Mystus prabini, A New Species of Catfish (Siluriformes: Bagridae) from Arunachal Pradesh, north-eastern, India. Zootaxa. 4648(3); 511–522. DOI: 10.11646/zootaxa.4648.3.6

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[Ichthyology • 2016] Olyra praestigiosa • A New Species of Anguilliform Catfish (Siluriformes: Bagridae) from Bangladesh and northeastern India

Olyra praestigiosa

Ng & Ferraris, 2016

Abstract

We describe Olyra praestigiosa, a new anguilliform bagrid catfish, from the Brahmaputra River drainage in Bangladesh and northeastern India. The new species differs from congeners in having the following unique combination of characters: interorbital distance 30–37% HL; body depth at anus 6–9% SL; length of adipose-fin base 99–16% SL; adipose fin separate from upper principal caudal-fin rays; post-adipose distance 15–18% SL; 17–22 anal-fin rays; caudal peduncle length 14–19% SL; and caudal peduncle depth 6–8% SL.

Keywords: Pisces, New fish species, Brahmaputra River drainage

Heok Hee Ng and Carl J Jr. Ferraris. 2016. A New Species of Anguilliform Catfish (Actinopterygii: Siluriformes: Bagridae) from Bangladesh and northeastern India. Zootaxa. 4079.3; 388-392. DOI:  mapress.com/j/zt/article/view/zootaxa.4079.3.6