Shoal & Stem
tree on plateau

Mosquitofish

Gambusia affinis

6 in the tank

Where it's from

Native to the Alabama, Alafia, Altamaha, Apalachicola and 41 other river basins

United States and Mexico

Recorded as introduced in Türkiye (Acisu basin), Chile (Aconcagua basin), France (Adour basin), Afghanistan and 323 more places

Native range: Global Register of Introduced and Invasive Species (CC BY 4.0); Global Register of Introduced and Invasive Species – Azerbaijan (CC BY 4.0); RINSE (CC0); DAISIE (CC BY 4.0); GRIIS Checklist of Introduced and Invasive Species (CC BY 4.0); Listado taxonómico de peces y lampreas con distribución en México (CC0); Global Register of Invasive and Introduced Species (CC BY 4.0); Global Register of Introduced and Invasive Species - Timor-Leste (CC BY 4.0); Global Register of Introduced and Invasive Species -Samoa (CC BY 4.0); Protected Areas - Global Register of Introduced and Invasive Species (CC BY 4.0); Tedesco et al. 2017 (CC0).

At a glance

Size
2.5 in
6 cm
Min tank
10 gal
38 L
Temp
39–95°F
4–35°C
pH
6.0–9.0
GH
89–536 ppm
5–30 dGH
Temperament
Semi-aggressive
Swims
Top
Lifespan
1–3 yrs

Ammonia 0 ppm and nitrate under 40 ppm.

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Everything about Mosquitofish

Care guide, common diseases, tank mates, keepers' experiences and more