| Main Ref. | Vera Alcaraz, H.S., C.S. Pavanelli and V.A. Bertaco, 2009 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks | Mature males with bony hooks in dorsal, pectoral, pelvic, and anal fins. Mature females with a few small bony hooks on the last unbranched and anterior branched anal- fin rays. |
| Striking features | |
| Body shape lateral | fusiform / normal |
| Cross section | compressed |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | terminal |
| Type of scales | cycloid scales |
| Diagnosis |
Distinguished from other congeners by the combination of the following characters: anal fin with 13-17 branched rays; lateral line scales 35-38; one humeral spot; dentary teeth abruptly decreasing in size after the fifth tooth; orbital diameter 22.6-29.1% of HL; interorbital width 30.6-35.7% of HL; snout length 25.3-29.7% of HL; predorsal scales 12-15; dorsal procurrent rays 10-12; maxillary teeth 1 or 2; and a conspicuous midlateral band from humeral region to caudal peduncle (Ref. 81203). Description: Dorsal-fin rays i,9, ii,9; anal-fin rays iii,14, iii,15, iii,16), iv,13, iv,14, iv,15, iv,16, iv,17, v,13, v,14, v,15, v,16), v,17; pectoral-fin rays i,9, i,10, i,11, or i,12; pelvic-fin rays i,6 or i,7. Scale series between lateral line and pelvic-fin insertion 5 (Ref. 81203). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 35 - 38 |
| Pored lateral line scales | 35 - 38 |
| Scales in lateral series | |
| Scale rows above lateral line | 5 - 7 |
| Scale rows below lateral line | |
| Scales around caudal peduncle | 13 - 15 |
| Barbels | |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | 10 - 11 |
| on upper limb | 6 - 6 |
| total | |
| Vertebrae | |
| preanal | 17 - 19 |
| total | 34 - 37 |
| Attributes | no striking attributes |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | 10 - 11 |
| Adipose fin | present |
| Attributes | forked |
| Fins number | |
| Spines total | |
| Soft-rays total |
| Pectoral | Attributes more or less normal |
| Spines | |
| Soft-rays 10 - 13 | |
| Pelvics | Attributes more or less normal |
| Position abdominal before origin of D1 | |
| Spines | |
| Soft-rays 7 - 8 |