Comprehensive DescriptionRead full entry
Material examined. MUMF 6120, 10, 46.6-50.5 mm SL; India : Manipur : Lokchao R at Moreh, (Indo-Myanmar border 94°18’11” E , 24°14’56”N , 212m asl); W. Vishwanath, 2 April 2004 . MUMF 7250, 15, 47.5-53.9 mm SL; same data as MUMF 6120; L. Sakuntala, 5 July 1999 . MUMF 9500-8, 9, 41.2-53.0 mm SL; same data as MUMF 6120; A. Darshan and S. Sanjabihari, 14 July 2005 . MUMF 10001, 3, 41.0-45.5 mm SL; India : Manipur : Maklang R. at Ukhrul district ; Kingson, 15 July 2005 .
Diagnosis. Maximum head width 55.5-66.0% of head length; last simple dorsal ray short, spiny and finely serrated posteriorly with 12-16 serrae, spine length 16.0-20.0% SL and 58.0-65.4% HL; lateral line complete with 21-24 scales in row and 19-23 pored scales, if incomplete, reaches at least to the caudal peduncle; preanal scalesl8; presence of an oblong black mark above pectoral fin and one black blotch on 17th-19th scales of the lateral-line row; two black bands on dorsal fin, incomplete one at middle length on the membrane between 3rd -5th branched rays and another one on the branched rays at margin.
Description. Table 3 presents frequency distributions of meristic characters, and Table 4 presents morphometric data. Body short, compressed and deep. Barbels absent. Lips thick, lateral fold on snout well developed.
Dorsal fin origin opposite that of pelvic fin, inserted midway between tip of snout and base of caudal fin; 3 simple and 8 branched rays; third simple ray short, spiny and serrated posteriorly with 12-16 serrae. Pectoral fin with 1 simple posteriorly serrated ray and 12 branched rays; almost reaching the pelvic fin origin. Pelvic fin with 1 simple and 8 branched rays. Anal fin with 3 simple and 5 branched rays. Caudal fin with 10+9 principal rays, 9+8 branched.
Scales large. Lateral line complete, 21-24 in the row with 19-23 pored scales; ½5 scales between dorsal fin origin and lateral-line row, 5½ between lateral line and pelvic fin base. If incomplete, the lateral line at least reaches the caudal peduncle. Predorsal scales 8-10. Preanal scales 18.
Predorsal bone 4 and predorsal neural spine 4. First pterygiophore inserted between 8th and 9th vertebrae. Total vertebrae count 4+25-26.
Colouration. An oblong black mark above pectoral fin on the 3rd scale of the lateral line and one black blotch on 17th -19th scales of the lateral-line row. Two black bands on the dorsal fin, the first at middle length and on the membrane between 3rd -5th branched rays only, the second on the branched rays at the margin of the fin.
Distribution. Myanmar: Chindwin Basin (Day, 1871). India: Chindwin basin in Manipur (Vishwanath and Juliana, 2004) (Fig. 3). Myanmar, Thailand, Laos (Kottelat, 2001).