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1. Three new species of cobitid fish (Teleostei, Cobitidae) from the River Xinjiang and the River Le'anjiang, tributaries of Lake Poyang of China with remakrs on their classification

Creator:
Chen, Yongxia and Chen, Yifeng
Type:
article, model:article, and TEXT
Subject:
Cobitis, taxonomy, Jiangxi Province, and molecular phylogeny
Language:
English
Description:
Three new species of Cobitis C. fasciola sp. nov., C. crassicauda sp. nov. and C. stenocauda sp. nov. are found from the River Xinjiang and the River Le’anjiang, tributaries of Lake Poyang, belonging to the River Yangtze system, Jiangxi Province, China. These cobitid fish are described based on the morphology features such as the pigmentation pattern, shape of lamina circularis, body scales, mouth character and sequences of mitochondrial cytochrome b (cyt b) gene, which can be used for molecular identification and diagnosis of these species. Illustrations of the morphology characters of new species are given, and phylogenetic analysis identifies deoxyribonucleic acid (DNA) lineages closely related to these cobitid fish. Traditional taxonomy of cobitid fish of the subfamily Cobitinae is discussed based on the recent molecular phylogenies of these cobitid fish.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2. Three new species of cobitid fish genus Cobitis (Teleostei, Cobitidae) from the River Pearl basin of China

Creator:
Chen, Yongxia, Sui, Xiaoyun , He, Dekui, and Chen, Yifeng
Type:
article, model:article, and TEXT
Subject:
loaches, taxonomy, Guangxi, Guangdong Province, and molecular phylogeny
Language:
English
Description:
Morphology features and sequences of mitochondrial cytochrome b (cyt b) gene were analyzed of the species Cobitis Linnaeus, 1758 from the River Pearl basin of China. Three new species of C. leptosoma sp. nov., C. wumingensis sp. nov.,and C. obtusirostra sp. nov. were described. C. leptosoma is distinguishable from its congeners by a long knife-shaped lamina circularis; a sharp and nearly filamentous tip of the pectoral-fin ray in males; four Gambetta pigment lines, L2 usually being absent, L5 consisting of 10-12 oval blotches; and a round or oblong spot smaller than or equal to the eye diameter on the upper part of the caudal peduncle. C. wumingensis is distinguishable by small barbels, maxillo-mandibular barbels shorter than eye diameter; a long fingerlike lamina circularis; a sharp and nearly filamentous tip of the pectoral-fin ray in males; L5 showing sexual dimorphism; a deeper bluish band pigment in females; a surface pigment with 13-14 blotches in males; and a conspicuous jet-black roundish spot smaller than or equal to the eye diameter on the upper part of the caudal peduncle. C. obtusirostra is distinguished by a cystiform lamina circularis; a sharp and nearly filamentous tip of the pectoral-fin ray in males; L5 consisting of 8-10 rounded blotches; and a conspicuous jet-black arcuate spot smaller than the eye diameter on the upper part of the caudal peduncle.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

3. Two new species of cobitid fish (Teleostei, Cobitidae) from the River Nanliu and the River Beiliu, China

Creator:
Chen, Yongxia and Chen, Yifeng
Type:
article and TEXT
Subject:
Cobitis, taxonomy, and Guangxi Province
Language:
English
Description:
Two new species of Cobitis, C. multimaculata sp. nov. and C. microcephala sp. nov. are described and illustrated from the River Nanliu and the River Beiliu, Guangxi Province, China. Cobitis multimaculata can be distinguished from congeners by its unique colour pattern of scattered, small, elongated, oval blotches on the side of the body; well developed mental lobes; and cardioid lamina circularis. It is similar to C. arenae, but can be distinguished from it by possessing a stumpy body (body depth 6.1-6.6 in standard length in males and 5.7-7.3 in females versus 7.9 in standard length in male and 7.3-9.6 in females), shorter caudal peduncle (caudal peduncle depth 1.4-1.7 of its length in males and 1.6-1.8 in females versus 2.5 in male and 2.3-3.1 in females); and 17-22 small, elongate oval blotches along lateral line (versus 20-25 spots). Cobitis microcephala can be distinguished from congeners by possessing small and solitary irregular spots scattered on the side of the body; a slender and finely serrated (16-18 serrae on the inner margin) lamina circularis; and a much smaller jet black spot on upper half of caudal-fin base.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/