| Main Ref. | Menezes, N.A. and S.H. Weitzman, 2011 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks | Sexually mature males possess hooks on pelvic fin rays; and distal tip of longest pelvic-fin rays extending slightly beyond anal-fin origin in adult males, barely reaching anal-fin origin in adult females (Ref. 86734). |
| Striking features | |
| Body shape lateral | short and / or deep |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | cycloid scales |
| Diagnosis |
Readily distinguished from most similar congener Diapoma terofali by having 15-18 gill rakers on the lower limb of first gill arch (vs. 11-13) and 26-33 anal-fin rays (vs. 24-27) (Ref. 86734). Description: Dorsal-fin rays ii, 8; anal-fin rays iv-v, 24-27; pectoral-fin rays i, 9-11; pelvic-fin rays i, 6. Total number of gill rakers on first gill arch 16-19, (Ref. 86734). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | |
| Pored lateral line scales | 8 - 14 |
| Scales in lateral series | 35 - 40 |
| Scale rows above lateral line | |
| Scale rows below lateral line | |
| Scales around caudal peduncle | 13 - 15 |
| Barbels | |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | |
| on upper limb | |
| total | 16 - 19 |
| Vertebrae | |
| preanal | |
| total |
| Attributes | no striking attributes |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | 10 - 10 |
| Adipose fin | present |
| Attributes | forked |
| Fins number | |
| Spines total | |
| Soft-rays total |
| Pectoral | Attributes more or less normal |
| Spines | |
| Soft-rays 10 - 12 | |
| Pelvics | Attributes more or less normal |
| Position abdominal before origin of D1 | |
| Spines | |
| Soft-rays 7 - 7 |