| Main Ref. | Paugy, D., 2003 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | no special organs |
| Different appearance | always different morphology between mature adults |
| Different colors | males alike females |
| Remarks | Sexual dimorphism affecting the anal-fin shape in adult males. |
| Striking features | none |
| Body shape lateral | fusiform / normal |
| Cross section | |
| Dorsal head profile | more or less straight |
| Type of eyes | more or less normal |
| Type of mouth/snout | more or less normal |
| Position of mouth | terminal |
| Diagnosis |
Diagnosis: parietal fontanella always present, also in adults, open; 5.5 scales above lateral line; 25-31 lateral line scales; 15-16 anal fin branched rays; 6/8 premaxillary teeth; 16-17 gill rakers on lower limb of first gill arch; gill rakers long (Ref. 2880, 81279). Description: dorsal-fin origin at about the same level as pelvic-fin insertions; anal fin with 3 unbranched and 15-16 branched rays; six outer premaxillary teeth alined in a single row; equal jaws; sexual dimorphism in males as in Alestes species (Ref. 2880, 81279). Colouration: Body with humeral spot and pre-caudal spot dark extending to hind margin of caudal-fin fork; body silvery, back dark yellowish , ventral zone white; fins except pectoral and ventrals (no color) yellow; these colours disappear after preservation, but dark band on sides from gill cover to caudal fin and broadening at about mid-length of body, becomes more apparent (Ref. 2880, 81279). |
| Ease of Identification |
| Lateral Lines | 1 Interrupted: No |
| Scales on lateral line | 25 - 31 |
| Pored lateral line scales | |
| Scales in lateral series | |
| Scale rows above lateral line | 5.5 - 5.5 |
| Scale rows below lateral line | 3.5 - 3.5 |
| Scales around caudal peduncle | |
| Barbels | 0 |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | 16 - 17 |
| on upper limb | |
| total | |
| Vertebrae | |
| preanal | |
| total |
| Attributes | no striking attributes |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | |
| Adipose fin | present |
| Attributes | forked; more or less normal |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 18 - 19 |
| Pectoral | Attributes more or less normal |
| Spines | |
| Soft-rays | |
| Pelvics | Attributes more or less normal |
| Position abdominal beneath origin of D1 | |
| Spines | |
| Soft-rays |