Panuco swordtail (Xiphophorus nigrensis) fish species and information / pictures of Panuco swordtail - Xiphophorus nigrensis

Panuco swordtail (Xiphophorus nigrensis) fish species information

Scientific Name
Xiphophorus nigrensis

Common Name
Panuco swordtail

Biology
Inhabits fast-flowing river segments with steep banks and overhanging bank vegetation.

Classification

Classified By
Rosen, 1960
Class
Ray-finned fishes (Actinopterygii)
Order
Live bearers, Killifishes and Rivulines (Cyprinodontiformes)
Family
Poeciliids (Poeciliidae)

Distribution

Region
Central America
Distribution
Central America: Rio Choy of the Rio Panuco basin in San Luis Potosi, Mexico.
Range
Unknown

Environment

Climate
Tropical
Water Temperature From
24 °C
Water Temperature To
25 °C
Depth From - meters
Unknown m
Depth To - meters
Unknown m
Zone
benthopelagic
Environment
Freshwater; ; pH range: ? - 7.5; dH range: ? - 25 benthopelagic
Trophic Level
3.1 s.e. 0.40 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
6.0 cm
Common Length
Unknown cm
Phylogenetic Diversity Index
PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Aquarium: commercial
Vulnerability
Low vulnerability (19 of 100)
Resilience
High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)
Threat To Humans
  Harmless
IUCN Red List Status
  Not Evaluated