Silverdollar (Metynnis longipinnis)

Scientific name: Metynnis longipinnis Zarske & G?ry, 2008

The Silverdollar (Metynnis longipinnis) is a freshwater fish of the family Characidae. Native range: South America, Venezuela. Mouth of rio Casiquiare, rio Negro.

Biology

The species is closely related to Metynnis hypsauchen (M?ller & 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.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Metynnis longipinnis
Family
Characidae (Characins)
Order
Characiformes (Characins)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
6.7
Environment
Freshwater; pelagic
Climate
Tropical
Distribution
South America: Venezuela. Mouth of rio Casiquiare, rio Negro.
Conservation status (IUCN)
Not Evaluated
Threat to humans
Harmless
Uses
Fisheries:
Resilience
High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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