| Main Ref. | Zawadzki, C.H. and I. de Souza Penido, 2021 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral (shape guide) | elongated |
| Cross section | oval |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
This species is distinguished from all its congeners by having very short dorsal, pectoral and pelvic fins: dorsal-fin spine length approximately equal to the distance from the snout tip to the mid-length of interorbital distance, pectoral-fin spine not reaching to pelvic-fin insertion; and pelvic-fin spine not or just reaching to anal-fin origin (vs. dorsal-fin spine length varying from equal to head length in most species to similar to predorsal length, pectoral-fin spine surpassing insertion of pelvic spine, and pelvic-fin spine surpassing origin of anal fin) (Ref. 124776). Description: D II,7, with spinelet; A I,4; pectoral I,6; pelvic I,5. |
| 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 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | 2 - 2 |
| Soft-rays total | 7 - 7 |
| Adipose fin |
| Attributes |
| Fins number | |
| Spines total | |
| Soft-rays total | 4 - 4 |
| Pectoral | Attributes |
| Spines 1 | |
| Soft-rays 6 - 6 | |
| Pelvics | Attributes |
| Position | |
| Spines | |
| Soft-rays 5 - 5 |