| Main Ref. | Ng, H.H. and M. Kottelat, 1998 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | elongated |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | sub-terminal/inferior |
| Type of scales | |
| Diagnosis |
Distinguished from all its congeners by the following unique combination of characters: slender body (body depth at anus 11.9-13.5% SL); depth of caudal peduncle 5.5-5.8% SL; extremely narrow head ( head width 17.5-18.7% SL); small and close set-eyes (eye diameter 7-9% HL; interorbital distance 33-38% HL); short nasal barbels (23-30% HL); possession of 35-36 total vertebrae; presence of 1+ 3 gill rakers on the first branchial arch; 5-6 serrae on the posterior edge of the pectoral spine; 8 branchiostegal rays; caudal fin strongly forked with pointed lobes (Ref. 30226). Body brown with 2 dark patches along dorsum at base of dorsal and adipose fins (Ref. 43281). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | |
| Pored lateral line scales | |
| Scales in lateral series | |
| Scale rows above lateral line | |
| Scale rows below lateral line | |
| Scales around caudal peduncle | |
| Barbels | |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | |
| on upper limb | |
| total | 4 - 4 |
| Vertebrae | |
| preanal | |
| total | 35 - 36 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | 6 - 6 |
| Adipose fin | present |
| Attributes | forked; more or less normal |
| Fins number | |
| Spines total | |
| Soft-rays total | 9 - 9 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 8 - 8 | |
| Pelvics | Attributes |
| Position abdominal behind origin of D1 | |
| Spines | |
| Soft-rays 7 - 7 |