| Main Ref. | Myers, R.F., 1991 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | elongated |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Diagnosis |
Distinguished by the double emarginate tail fin with pale tips on each lobe, and (usually) the presence of a few scattered black blotches on the lower sides (Ref. 1602). Top of head between eyes flat or concave; mouth large (Ref. 26938). Description: Characterized further by silvery body color; dorsal and caudal fin lobes with large black patches; absence of gill rakers (rough platelets present on gill arches, without spinules); erect and contiguous teeth; emarginate caudal fin with two rounded lobes in middle of posterior margin; greatest depth of body 6.0-8.2 in SL (Ref. 90102). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 75 - 87 |
| Pored lateral line scales | 77 - 85 |
| 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 | 0 - 0 |
| Vertebrae | |
| preanal | |
| total |
| Attributes | no striking attributes |
| Fins number | 2 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 6 - 6 |
| Soft-rays total | 9 - 9 |
| Adipose fin | absent |
| Attributes | forked |
| Fins number | 1 |
| Spines total | 1 - 1 |
| Soft-rays total | 10 - 10 |
| Pectoral | Attributes |
| Spines 0 | |
| Soft-rays 13 - 15 | |
| Pelvics | Attributes |
| Position | |
| Spines 1 | |
| Soft-rays 5 - 5 |