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Metynnis longipinnis Zarske & Géry, 2008 |
| 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: | Least Concern (LC); Date assessed: 18 December 2020 Ref. (130435) | |||
| Threat to humans: | harmless | |||