Molecular evidence reveals phylogenetic relationships among cypriniformes in Guangdong, highlighting species diversity.
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.
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Lei et al. (2025) studied this question.
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