Yellowfin gambusia (Gambusia alvarezi)

Scientific name: Gambusia alvarezi Hubbs & Springer, 1957

The Yellowfin gambusia (Gambusia alvarezi) is a freshwater fish of the family Poeciliidae. In the aquarium it needs water at 24–28°C (75–82°F). Native range: North America, R?o Conchos, Mexico.

Yellowfin gambusia care at a glance

Temperature: 24–28°C (75–82°F)

Species facts

Scientific name: Gambusia alvarezi
Family: Poeciliidae (Poeciliids)
Order: Cyprinodontiformes (Live bearers, Killifishes and Rivulines)
Class: Actinopterygii (Ray-finned fishes)
Maximum length: 3.0
Environment: Freshwater;; pH range: 7.5 - ?; dH range: 10 - 15 benthopelagic; non-migratory
Climate: Tropical
Distribution: North America: R?o Conchos, Mexico.
Conservation status (IUCN): Vulnerable (VU) (A1ce+2ce, B1+2c, C2b, D2)
Threat to humans: Harmless
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.

Last updated 27 September 2026