Naked characin (Gymnocharacinus bergii) fish species and information / pictures of Naked characin - Gymnocharacinus bergii

Naked characin (Gymnocharacinus bergii) fish species information

Scientific Name
Gymnocharacinus bergii

Common Name
Naked characin

Biology
Medium sized fish considered to be the most southern characid living in temperate waters. Young with very tiny soft and delicate scales which are reabsorbed into the skin making the skin greasy and often with granulated or spongy appearance (Ref. 7252).

Classification

Classified By
Steindachner, 1903
Class
Ray-finned fishes (Actinopterygii)
Order
Characins (Characiformes)
Family
Characins (Characidae)

Distribution

Region
South America
Distribution
South America: Valcheta stream in Rio Negro basin, Southern Argentina.
Range
35°S - 36°S

Environment

Climate
Subtropical
Water Temperature From
22 °C
Water Temperature To
26 °C
Depth From - meters
Unknown m
Depth To - meters
Unknown m
Zone
demersal
Environment
Freshwater; demersal
Trophic Level
3 s.e. 0.36 Based on size and trophs of closest relatives
Occurs in Marine / Salt water
False
Occurs in Brackish water
False
Occurs in Fresh Water
True
Occurs on Reefs
False
Is kept in Aquariums
True

Physical Size and Genetics

Maximum Length
7.5 cm
Common Length
Unknown cm
Phylogenetic Diversity Index
PD50 = 1.0000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Fisheries: of no interest; aquarium: commercial
Vulnerability
Low vulnerability (15 of 100)
Resilience
High, minimum population doubling time less than 15 months (tm=1)
Threat To Humans
  Harmless
IUCN Red List Status
  Endangered (EN) (A2ce, B1+2c)