| Main Ref. | Říčan, O. and S.O. Kullander, 2008 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral (shape guide) | |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
This species is distinguished by having the largest scales between the dorsal fin and upper lateral line, only 2 ½ scales (vs. 3 ½); similar to A. facetus, cf. facetus, and minuano in coloration patterns. It is the same with forquilha and tembe, in having a small and inconspicuous midlateral blotch and a straight midlateral stripe (if present), running along the flank in the limits of E0 and E1 scale rows; differs with both in having lower meristics, such as 13 caudal vertebrae (vs. 14 or more), a shorter caudal peduncle, shorter scale cover of the dorsal fin, larger (and fewer) scales and a narrower interorbital space (Ref. 74689). |
| 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 | |
| Vertebrae | |
| preanal | |
| total | 26 - 26 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | 15 - 17 |
| Soft-rays total | 8 - 10 |
| Adipose fin |
| Attributes | more or less truncate |
| Fins number | 1 |
| Spines total | 6 - 7 |
| Soft-rays total | 7 - 8 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays | |
| Pelvics | Attributes |
| Position | |
| Spines | |
| Soft-rays |