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  3. Western Mosquitofish

Bony fish · Cyprinodontiformes · Poeciliidae

Western Mosquitofish

Gambusia affinis

Least Concern

The species is abundant and widely distributed; it faces no significant short-term risk.

Spotted something wrong?

The mosquitofish is a small fish of the family Poeciliidae, order Cyprinodontiformes, native to southern North America, notable for having been introduced worldwide for the biological control of mosquitoes. It is included on the list of 100 of the world's worst invasive alien species drawn up by the International Union for Conservation of Nature.

Size

up to 7 cm

Life expectancy

3 years

Diet

Omnivore

Combines animal and plant food depending on availability.

Sighting difficulty

Easy

Freshwater
53countries3dive sites4same family

Fun facts

  • It has been released across half the world to control mosquito larvae, which has made it one of the most widespread invasive species on the planet.
  • It is live-bearing: the female gives birth to fully formed young and can raise several broods a year.

Life cycle and biology

Skeleton type
Vertebrate - internal bony skeleton (bony fish)
Habitat and environment
Shallow water, backwaters, ponds and ditches of the Mississippi basin and the Gulf of Mexico drainages; it tolerates brackish water and temperatures of 12 to 29 °C
Sexual maturity
3 months
Litter / clutch size
Between 10 and 60 young per litter

Sources consulted: https://es.wikipedia.org/wiki/Gambusia_affinis

Where to find it

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The pins mark the dive sites where its presence is documented.

Where to see it

Parks and dive sites where this species has been documented.

Related species

Other species in the catalogue with the most in common with Western Mosquitofish — same habitat, park, country, tags or family.

Same taxonomic family
Same taxonomic family
Same taxonomic family
Shares a dive site
Same taxonomic family
Shares a dive site

Keep exploring

Based on what we already know about western mosquitofish.

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See full glossary
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CountriesUnited States
TagsOmnivore
Omnivore
Fish
Freshwater

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