| Main Ref. | Melo, M.R.S. and P.A. Buckup, 2002 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks | Fins of juveniles hyaline. Mature males with dorsal, anal, pectoral and pelvic fins conspicuously marked (fin pigmentation pattern more intense in larger individuals); females with dorsal, anal, pectoral and pelvic fins notably lighter than males. |
| Striking features | |
| Body shape lateral | |
| 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 Characidium species by the presence of black marks along the sides of the body, superimposed on the vertical bars, which occur in most species of the genus; most of the marks are vertically oriented elliptical, except anteriormost 1-2 marks, which may be roundish or horizontally elongated (Ref. 46824). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | |
| Pored lateral line scales | |
| Scales in lateral series | 30 - 34 |
| Scale rows above lateral line | |
| Scale rows below lateral line | |
| Scales around caudal peduncle | 14 - 14 |
| Barbels | |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | |
| on upper limb | |
| total | |
| Vertebrae | |
| preanal | |
| total | 32 - 33 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | 12 - 13 |
| Adipose fin | absent |
| Attributes | forked; more or less normal |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 8 - 9 |
| Pectoral | Attributes more or less normal |
| Spines 0 | |
| Soft-rays 10 - 12 | |
| Pelvics | Attributes more or less normal |
| Position abdominal beneath origin of D1 | |
| Spines 0 | |
| Soft-rays 8 - 10 |