| Main Ref. | Román-Valencia, C. and D.K. Arcila-Mesa, 2010 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks | Males possess a well developed row of hooks on each ray segment of pelvic and anal fins: branched anal-fin rays with 3-13 hooks, on fifth to twelfth rays; one simple pelvic-fin ray with 3-11hooks, all branched pelvic-fin rays with 11-17 hooks on basal two thirds of rays (Ref. 83529). |
| Striking features | |
| Body shape lateral | elongated |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | terminal |
| Type of scales | |
| Diagnosis |
Diagnosed from other species of Hemibrycon by possessing the following characters: a widened first tooth on the maxilla with the remaining teeth decreasing sharply in size; the first maxilla tooth pentacuspid and wider than the others (vs. first tooth on maxilla unicuspid or tricuspid and of same size as the others, except in Hemibrycon colombianus and Hemibrycon virolinica); absence of an expansion on the ventral anterior tip of the maxilla (vs. with expansion on the ventral anterior tip of the maxilla, except in Hemibrycon metae). Diagnosed from Hemibrycon colombianus in having 42-46 pored scales in the lateral line (vs. 46-54); and from the species of Hemibrycon from the upper and middle Río Magdalena drainage in having 25-29 branched anal-fin rays (vs. 19-24) (Ref. 83529). Description: Dorsal fin ii-iii,7-8; anal fin iii-iv,23-28; pectoral fin ii,9-11; pelvic fin ii-iii,6 (Ref. 83529). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | |
| Pored lateral line scales | 42 - 46 |
| Scales in lateral series | |
| Scale rows above lateral line | 7 - 9 |
| Scale rows below lateral line | 6 - 8 |
| Scales around caudal peduncle | |
| Barbels | |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | |
| on upper limb | |
| total | |
| Vertebrae | |
| preanal | |
| total | 42 - 43 |
| Attributes | no striking attributes |
| Fins number | |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | |
| Adipose fin |
| Attributes | forked |
| Fins number | |
| Spines total | |
| Soft-rays total |
| Pectoral | Attributes more or less normal |
| Spines | |
| Soft-rays 11 - 13 | |
| Pelvics | Attributes more or less normal |
| Position abdominal before origin of D1 | |
| Spines | |
| Soft-rays 8 - 9 |