Head moderately large. Snout short, blunt. Mouth inferior, arched and small, posterior end distant from anterior end of eye; well developed papillae on extended lips. One pair of mandibular barbells at corner of mouth. Body cylindrical, elongated, posterior laterally compressed; ventral profile horizontal to origin of anal; dorsal arched. Scales moderately large, cycloid; ventral surface of head, thorax and abdomen naked; lateral line scales complete. L.l.：35-37; dorsal fin rays：3+7; pectoral fin rays：1+12-13; pelvic fin rays：1+7; anal fin rays：2+6; pectoral and pelvic fins laterally expanded; pectoral fins end distant from pelvic fin origin; caudal fin forked. Pelvic fin origin at middle between snout tip and caudal peduncle end, posterior tip extended over anus. Dark brown dorsally; silver white ventrally. A dark longitudinal stripe on middle of side; irregular dark blotches along back. A conspicuous spot on caudal peduncle end. All fins slightly transparent, pair fins turn to red in breeding season.
habitats
Primary freshwater fish, inhabits in slightly fast running water with high dissolved oxygen of lower and middle reaches. Benthic, prefers to form schools. Polyphagia, feeds on aquatic insects and diatom on rock.
Distribution
Endemic to western portion of Taiwan, can be found from Taan River to Kaoping River.
Banarescu, P.M. etc. 1968 
2012 Redlist of Fresh Water Fishes::LC
