title: Re-description of the gudgeon species Saurogobio gracilicaudatus Yao & Yang in Luo, Yue & Chen, 1977 (Teleostei: Cyprinidae) from the Chang-Jiang basin, South China, with a note on its generic classification.
abstract: Saurogobio gracilicaudatus, originally described from the middle Yangtze River (Chang-Jiang in Chinese) basin at Yichang and Guanghua (now Laohekou), Hubei Province, South China, is here re-described, with particular concern for oromandibular structures in the mouth. It is uniquely distinguishable from all other species of Saurogobio in having a rostral cap with a slightly crenulated median portion, lips covered with brush-like, conical papillae, and a lower lip with a small, smooth and protruded central pad anteriorly free and posteriorly confluent with lateral lobes. The generic classification of this species is also discussed on the basis of oromandibular structures, which are of taxonomic importance in generic classification of gudgeons.
authors.affiliation: College of Animal Science and Technology, Hunan Agricultural University, Changsha, 410128, Hunan Province, P. R. China; Email: unknown.
authors.forename: Zhen-Yan
authors.initials: ZY
authors.lastname: Dai
authors.affiliation: Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, Hubei Province, P. R. China; Email: unknown.
authors.forename: E
authors.initials: E
authors.lastname: Zhang
authors.affiliation: Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, Hubei Province, P. R. China Graduate University of Chinese Academy of Sciences, Beijing, 100039, P. R. China; Email: unknown.
authors.forename: Zhong-Guan
authors.initials: ZG
authors.lastname: Jiang
authors.affiliation: Graduate University of Chinese Academy of Sciences, Beijing, 100039, P. R. China; Email: unknown.
authors.forename: Xue
authors.initials: X
authors.lastname: Wang
mesh_terms: D063147:Animal Distribution; D000825:Animal Structures / Q000033:anatomy & histology / Q000254:growth & development; D000818:Animals; D049628:Body Size; D002681:China; D003530:Cyprinidae / Q000033:anatomy & histology / Q000145:classification* / Q000254:growth & development; D017753:Ecosystem; D005260:Female; D008297:Male; D009929:Organ Size