FIGURE 1 in 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

FIGURE 1. Ventral view of head in: (A) Saurogbio gracilicaudatus, IHB 2012120223, 97.7 mm SL, Xiang-Jiang of Dongting Lake system of middle Chang-Jiang basin at Xiangying County, Hunan Province, South China. (B) Saurogobio dumerili, IHB 59-010, 204.1 mm SL, Chang-Jiang at Yichang, Hubei Province, South China. (C) Saurogobio lissilabris, uncatalogued, 105.0 mm SL, Yuan-Jiang of Dongting Lake system of middle Chang-Jiang basin at Hanshou County, South China. (D) Saurogobio dabry, IHB uncatalogued, 105.8 mm SL, mainstream of middle Chang-Jiang basin at Wuhan, South China. (E) Saurogobio xiangjiangensis, IHB20120086, 105.6 mm SL, Gan-Jiang of lower Chang-Jiang basin at Wan'an, Jiangxi Province, South China. (F) Saurogobio immaculatus IHB 602447, 119.5 mm SL, Jin-Jiang of Nandu-Jiang basin at Chengmai County, Hainan Province, South China. af = anterior fold; cp = central pad; ll = lateral lobe of lower lip; pg = postlabial groove; rc= rostral cap; ul = upper lip.