| Main Ref. | Tan, H.H. and P.K.L. Ng, 2006 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | fusiform / normal |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Body scales with blue iridescence when live; distinct black lower lip with black chin bar; very slim body (body depth at dorsal-fin origin 20.6-22.9% SL; height at pectoral-fin origin 12.8-15.5% SL); 23-24 predorsal scales; 31-33 lateral scales and 25-27 anal fin rays (Ref. 57022). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 31 - 33 |
| 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 | 30 - 31 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | 0 - 1 |
| Soft-rays total | 7 - 8 |
| Adipose fin | absent |
| Attributes | more or less truncate |
| Fins number | |
| Spines total | 1 - 2 |
| Soft-rays total | 25 - 27 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 13 - 13 | |
| Pelvics | Attributes |
| Position before origin of D1 | |
| Spines 1 | |
| Soft-rays |