| Main Ref. | Collette, B.B., 1974 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | elongated |
| Cross section | oval |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Upper jaw about as long as wide. Top of snout uniform brown. Sixth anal ray of males greatly enlarged and elongated, reaching the tip of the caudal fin in adults. Fourth dorsal ray of adult males elongated, thickened distally, curving back to the base of the caudal fin. Vertebrae 38-39. Dorsal rays 10 in females and 11 or 12 in males. Anal rays 10-12 in females and 13 in males. Description: Characterized by greyish color on back and silvery white below; upper jaw with scales; elongate and pointed nasal papilla, extending well outside of nasal opening; rounded 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 | 11 - 13 |
| on upper limb | 4 - 4 |
| total | 15 - 17 |
| Vertebrae | |
| preanal | 25 - 27 |
| total | 38 - 39 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | 0 - 0 |
| Soft-rays total | 10 - 12 |
| Adipose fin |
| Attributes |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 11 - 13 |
| Pectoral | Attributes |
| Spines 0 | |
| Soft-rays 9 - 10 | |
| Pelvics | Attributes |
| Position | |
| Spines 0 | |
| Soft-rays |