| Family: |
Serrasalmidae (Piranhas and pacus), subfamily: Serrasalminae |
| Max. size: |
6.65 cm SL (male/unsexed) |
| Environment: |
pelagic; freshwater |
| Distribution: |
South America: Venezuela. Mouth of rio Casiquiare, rio Negro. |
| Diagnosis: |
The species is closely related to Metynnis hypsauchen (Müller & Troschel, 1844) according to 1. high number of gill-rakers, 2. long adipose fin, 3. deep body, 4. short head and 5. long occipitale and is clearly defined because of 1. the high number of serrae (36-37 vs. 27-32 of M. hypsauchen), 2. the small scales (91-93 vs. about 75-83), 3. uniformly silver colouration and 4. the extremely elongated dorsal fin and anal fin (Ref. 79633). |
| Biology: |
|
| IUCN Red List Status: |
Not Evaluated (N.E.) Ref. (130435)
|
| Threat to humans: |
harmless |
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