| Main Ref. | Higgins, R.P., 1983 |
| Appearance refers to |
| specialized organs | |
| different appearance | |
| different colors | |
| remarks |
| Striking features | |
| Body shape lateral | |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Diagnosis | First trunk segment almost of equal width; maximum width at segment 7, tapering moderately. An undulating cuticle ridge following a row of punctate sculpturing present on the even anterodorsal margin. Two areas of sculptured thin cuticle on the anterior margin of episternal plates; lateral area slightly anterior to mesial area. Anterior trunk segments with prominent mid-dorsal cuticle ridge. Ventral pachycycli prominent. Segment 11 with laterally displaced midventral thickenings; segment 12 only half as long as segment 11. Males with 3 pairs of penile spines at anterolateral margins of terminal sternal plates, adhesive tubes on segment 4 sternal plates, and slightly more pronounced sculpturing on first trunk segment (Ref. 1409). |
| Ease of Identification | easy to distinguish from other species. |
| 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 |
| Attributes | |
| Fins number | |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | |
| Adipose fin |
| Attributes |
| Fins number | |
| Spines total | |
| Soft-rays total |
| Pectoral | Attributes |
| spines | |
| soft-rays | |
| Pelvics | Attributes |
| Position | |
| spines | |
| soft-rays |