| Main Ref. | Costa, W.J.E.M., 2003 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | short and / or deep |
| Cross section | compressed |
| Dorsal head profile | more or less straight |
| Type of eyes | more or less normal |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | cycloid scales |
| Diagnosis |
Caudal peduncle of female with black spots. Male's anal fin with gray to black distal stripe; unpaired fins dark bluish gray; basihyal broad, 70-95% in length; conspicuous contact organs on scales of body sides. Second pharyngobranchial teeth, 5-10. Dorsal-fin rays 21-25 in male, 15-20 in female; anal-fin rays 22-24 in male, 19-23 in female; caudal-fin rays 23-36, caudal fin subtruncate in male, rounded in female (Ref. 49550). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 27 - 28 |
| Pored lateral line scales | |
| Scales in lateral series | |
| Scale rows above lateral line | |
| Scale rows below lateral line | |
| Scales around caudal peduncle | 16 - 16 |
| Barbels | |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | 13 - 13 |
| on upper limb | 4 - 4 |
| total | 17 - 17 |
| Vertebrae | |
| preanal | |
| total | 28 - 30 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | 15 - 25 |
| Adipose fin | absent |
| Attributes | other (see remark); more or less normal |
| Fins number | 1 |
| Spines total | |
| Soft-rays total | 19 - 24 |
| Pectoral | Attributes more or less normal |
| Spines 0 | |
| Soft-rays 12 - 13 | |
| Pelvics | Attributes more or less normal |
| Position abdominal before origin of D1 | |
| Spines 0 | |
| Soft-rays 6 - 6 |