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| Hainania minzhengi H.-T. Lei, Z.-Y. Gong & X.-K. Li, in Lei, Gong et Li, 2025. |
Abstract
Hainania Koller (Teleostei, Cypriniformes, Xenocyprididae) is known as a monotypic genus of sharpbelly fish that is endemic to Hainan Island, China. We describe Ha. minzhengi sp. nov., the second species of Hainania collected from Guangdong, based on morphology and molecular evidence. Phylogenetic relationships were inferred based on the mitochondrial cytochrome b (Cyt b) gene and cytochrome oxidase subunit 1 (COI) gene, by maximum likelihood and Bayesian methods and different partitioning schemes. Our result supports the sister group relationship between Ha. serrata and Ha. minzhengi sp. nov., but the monophyly of Pseudohemiculter or Hemiculterella was not recovered. A diagnostic key to Chinese species of Hainania and Pseudohemiculter is provided.
Keywords: Xenocyprididae; Hainania; phylogeny; morphology
Family Xenocyprididae Günther, 1868
Hainania Koller, 1927
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| Hainania minzhengi sp. nov. in life, holotype IHBMM202407001tp. photo by Haoyang Xie. |
Hainania minzhengi H.-T. Lei, Z.-Y. Gong and X.-K. Li, new species
Diagnosis. Hainania minzhengi can be distinguished from Ha. serrata in larger eyes, eye diameter larger than 30% HL vs. smaller than 30% HL in Ha. serrata; snout length shorter than eye diameter vs. equals or larger in Ha. serrata; pectoral fin extending slightly beyond halfway to pelvic fin origin vs. nearly reaching pelvic fin origin in Ha. serrata; fewer branched anal-fin rays, 13−14 vs. 15 in Ha. serrata; and fewer lateral line scales, 54−52 vs. 56−55 in Ha. serrata (Figure 3, Figure 4 and Figure 5).
Haotian Lei, Ziyu Gong and Xuankun Li. 2025. Description of A New Species of Hainania Koller (Teleostei, Cypriniformes, Xenocyprididae) from Guangdong Province, Southern China. Diversity. 17(8), 549. DOI: doi.org/10.3390/d17080549 [1 August 2025]
