| Main Ref. | Taki, Y., 1974 |
| 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 | |
| Type of scales | |
| Diagnosis |
Two pairs of barbels; maxillary barbels reaching pelvic fins or anal fins; mandibullary barbels minute, about as long as diameter of eye. Eyes small, covered by skin. Dorsal and pelvic fins small; anal fin long; pectoral fins well developed (Ref. 4792); vomerine teeth in 2 patches (Ref. 12693). Brown, usually marmorated body with conspicuous round black blotch above pectoral base (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 | 10 - 11 |
| Vertebrae | |
| preanal | |
| total |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | 4 - 4 |
| Adipose fin | absent |
| Attributes | forked; more or less normal |
| Fins number | |
| Spines total | |
| Soft-rays total | 54 - 74 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 12 - 14 | |
| Pelvics | Attributes |
| Position abdominal behind origin of D1 | |
| Spines | |
| Soft-rays 7 - 8 |