| Main Ref. | Román-Valencia, C., C.A. García-Alzate, R.I. Ruiz-C. and D.C. Taphorn, 2010 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks | Males with a row of very short hooks, on all branched and one simple anal-fin ray, each ray has 3-11 hooks, located on the posterior-most branch; also 12-14 small hooks on the branched rays of the pelvic fin, located on both branches of the rays, extending to the anterior-most part, also in the pectoral fin with 2-4 hooks on the distal end of the spokes; and 4-10 hooks on the distal end of dorsal fin (Ref. 85101). |
| 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 | cycloid scales |
| Diagnosis |
Distinguished from all other species of Hemibrycon in having a higher number scales on lateral line 44-51 (vs. 34-44, except Hemibrycon colombianus with 45-54 and Hemibrycon cairoense with 43-46). Other characters useful to diagnose this species from its congeners include: 5-9 scales between the lateral line and anal-fin origin (vs. 4-5, except Hemibrycon paez with 6-7, Hemibrycon colombianus with 7-9, Hemibrycon polyodon with 6-7, Hemibrycon orcesi with 4-7, Hemibrycon huambonicus with 8-9 and Hemibrycon coxeyi with 7); 5-6 scales between lateral line and pelvic-fin insertion (vs. more than 6, except Hemibrycon yacopiae with 4-6, Hemibrycon polyodon with 5-6, and Hemibrycon orcesi with 4-6); scales around caudal peduncle 13-14 (vs. 18-20); and a reddish spot present on both the dorsal and ventral margins of the caudal peduncle instead of just on the ventral margin as is the case for all other congeners (Ref. 85101). Description: Dorsal-fin rays ii-iii,7-8; anal-fin rays iii-v,24-27; pectoral-fin rays ii,10; pelvic-fin rays ii,6 (Ref. 85101). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 44 - 51 |
| Pored lateral line scales | 44 - 51 |
| Scales in lateral series | |
| Scale rows above lateral line | 6 - 8 |
| Scale rows below lateral line | 5 - 9 |
| Scales around caudal peduncle | 13 - 14 |
| Barbels | |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | |
| on upper limb | |
| total | |
| Vertebrae | |
| preanal | |
| total | 40 - 41 |
| Attributes | no striking attributes |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | |
| Adipose fin | present |
| Attributes | forked |
| Fins number | |
| Spines total | |
| Soft-rays total |
| Pectoral | Attributes more or less normal |
| Spines | |
| Soft-rays 12 - 12 | |
| Pelvics | Attributes more or less normal |
| Position abdominal before origin of D1 | |
| Spines | |
| Soft-rays 8 - 8 |