| Main Ref. | McKay, R.J., 1992 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | none |
| Body shape lateral | elongated |
| Cross section | circular |
| Dorsal head profile | more or less straight |
| Type of eyes | more or less normal |
| Type of mouth/snout | more or less normal |
| Position of mouth | terminal |
| Diagnosis |
Swim bladder with two anterior and two posterior extensions. The anterior extensions extend forward and diverge to terminate on each side of the basioccipital above the auditory capsule. Two lateral extensions commence anteriorly, each sending a blind tubule anterolaterally and then extending along the abdominal wall below the investing peritoneum to just posterior of the duct-like process. Two posterior tapering extensions of the swim bladder project into the caudal region, one usually longer than the other. The species has a low lateral line with about 70 scales (Ref. 48635). |
| Ease of Identification |
| Lateral Lines | 1 Interrupted: No |
| Scales on lateral line | 63 - 74 |
| Pored lateral line scales | |
| Scales in lateral series | |
| Scale rows above lateral line | |
| Scale rows below lateral line | |
| Scales around caudal peduncle | |
| Barbels | 0 |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | 8 - 10 |
| on upper limb | 1 - 3 |
| total | 9 - 14 |
| Vertebrae | |
| preanal | |
| total |
| Attributes | no striking attributes |
| Fins number | 2 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 11 - 13 |
| Soft-rays total | 20 - 23 |
| Adipose fin | absent |
| Attributes | forked; more or less normal |
| Fins number | 1 |
| Spines total | 2 - 2 |
| Soft-rays total | 18 - 23 |
| Pectoral | Attributes more or less normal |
| Spines 0 | |
| Soft-rays 14 - 16 | |
| Pelvics | Attributes more or less normal |
| Position thoracic before origin of D1 | |
| Spines 1 | |
| Soft-rays 5 - 5 |