| Main Ref. | Randall, J.E., 2001 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | fusiform / normal |
| Cross section | compressed |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
No narrow dark bars on body. Caudal fin blue in life. Dorsal profile of head from above upper lip to above centre of eye straight. Anterior interorbital region and adjacent space between nostrils strongly convex. Body depth 2.75 to 2.8 times in SL (Ref 9808). Description: Characterized further by presence of single plate with semicircular keel on each side of caudal peduncle; absence of horn or protuberance on forehead; straight porsterior margin of caudal fin (Ref. 90102). |
| 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 | 18 - 19 |
| Vertebrae | |
| preanal | |
| total |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | 4 - 5 |
| Soft-rays total | 28 - 30 |
| Adipose fin |
| Attributes |
| Fins number | 1 |
| Spines total | 2 - 2 |
| Soft-rays total | 29 - 29 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 17 - 17 | |
| Pelvics | Attributes |
| Position | |
| Spines 1 | |
| Soft-rays 3 - 3 |