| Main Ref. | Ng, H.H. and W.J. Rainboth, 2001 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks | Genital papilla small, located immediately posterior to anus in a depression that ends posteriorly with a straight transverse wall; with females, papilla located immediately posterior to anus in a U-shaped depression. |
| Striking features | |
| Body shape lateral | elongated |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Lower lip lacking a median notch and having a posterior margin with laciniate projections. Lunate caudal fin with elongate, strap-like, lower principal ray in mature males. Straight gill slit. Nasal barbel reaching about 1/4 of the distance to the eye. Maxillary barbel with rounded tip. Sides of body below adipose fin without pale elliptical patch. Male genital papilla immediately behind anus in a narrow longitudinal groove (Ref. 44353). Plain body; caudal peduncle 7-10 times longer than deep (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 | |
| Vertebrae | |
| preanal | |
| total | 40 - 41 |
| Attributes | |
| Fins number | |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | 6 - 6 |
| Adipose fin | present |
| Attributes | other (see remark) |
| Fins number | |
| Spines total | |
| Soft-rays total | 3 - 4 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 18 - 19 | |
| Pelvics | Attributes |
| Position abdominal behind origin of D1 | |
| Spines | |
| Soft-rays 5 - 5 |