Fishician®Diet
Omnivore – flake food, live/frozen insects and larvae; voracious insect eater
Aquarium species profile
Mosquito Fish
Gambusia affinis · North and Central America (native to southeastern USA; introduced worldwide)
Minimum tank10 gal
Adult size2"
Care levelEasy
TemperamentSemi-Aggressive
Temperature50–90°F
pH range6.0–8.0
Compatible tank mates
Robust livebearers, barbs, medium tetras
Tank mates to avoid
Long-finned fish (aggressive fin-nipper), very small or delicate fish
Care notes
Extremely hardy livebearer — tolerates a massive temperature range and even slight brackish water. Famous for eating mosquito larvae. Notoriously aggressive fin-nippers for their size — not ideal for planted or community tanks with delicate fish.
Check the whole aquarium. Tank size alone does not establish compatibility. Confirm adult size, water overlap, social grouping, territory, diet, and the individual animals before stocking.