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Issue: Vol. 5583 No. 1: 31 Jan. 2025
Type: Article
Published: 2025-01-31
DOI: 10.11646/zootaxa.5583.1.5
Page range: 101-112
Abstract views: 268
PDF downloaded: 9

Niwaella tigrina, a new species of spined loach from the Poyang Lake system of Jiangxi Province, East China

Jiangxi Provincial Institute of Fisheries Science; Nanchang 330039; China; Jiangxi Provincial Fishery Resources and Ecological Environment Monitoring Center; Nanchang 330039; China
Jiangxi Provincial Institute of Fisheries Science; Nanchang 330039; China
Jiangxi Provincial Institute of Fisheries Science; Nanchang 330039; China
Institute of hydrobiology; Chinese academy of sciences; Hubei 430072; China
Pisces Taxonomy Cobitidae new taxon middle Chang-Jiang basin

Abstract

A new species of the spiny loach genus Niwaella is described herein from the Xiu-Shui river, an affluent of Lake Poyang in Jiangxi Province, China. This species is distinguished from all other congeneric species in China due to having a unique body coloration, comprising 20-25 transverse black bars on the dorsum and upper part of the flank. Other characteristics, though not exclusive to this species, include an indistinct blackish mid-dorsal stripe from the nape to the caudal-fin base, a lower jaw fully covered by the lower lip; 17-20 black vertical bars on the lower part of flank, a short suborbital spine with a shorter processus latero-caudalis that is less than one-fifth the length of the processus medio-caudalis, and seven branched dorsal-fin rays. The validity of the new species is corroborated by its monophyly, as evidenced by phylogenetic analysis based on the mitochondrial cytochrome b gene.

 

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