鑑別 |
Diagnosis: Last unbranched ray of dorsal fin thorny, long and with posterior denticulation; barbels not well developed, anterior barbel very short, just reaching the posterior side of the maxilla, posterior barbel just reaching the middle of the eye (Ref. 27628). Dorsal side brown-silver coloured, ventral side silver, with a darker band on the flanks; fins not coloured (Ref. 27628). Description: Head pointed, mouth small, with 2 pairs of short barbels (Ref. 52193). Dorsal fin with 3 spines and 7-8 soft rays; anal fin with 3 unbranched and 5-7 branched rays; Primary dorsal fin ray serrated on distal half, hind margin of erect dorsal fin vertical (Ref. 27628, 52193). Scales in lateral line 32-40, 16-18 around caudal peduncle (Ref. 27628, 52193). Colouration: Plain olive grey or silvery in turbid waters, a thin sideline sometimes present (Ref. 52193). Fins not coloured (Ref. 27628). |