What size tank does a Mosquitofish need?

A Mosquitofish needs a minimum tank size of 10 gallons. A 20-gallon tank or larger is recommended for optimal health.

What fish can live with Mosquitofish?

Compatible tank mates for Mosquitofish include: . Always ensure adequate tank size and proper water parameters.

Mosquitofish

Q: Is Mosquitofish easy to care for?

Mosquitofish has a easy care level. Extremely hardy — tolerates huge temperature and pH ranges. Aggressive fin nipper despite small size. Best in species-only or pond setups.

Gambusia affinis

Also known as: Gambusia

💧 Freshwater ⚡ Semi-aggressive 🟢 Easy 🍽️ Omnivore

Hardy, aggressive livebearer used worldwide for mosquito control. Plain silver-gray but incredibly tough and adaptable.

Tank Size

10 gal

minimum (20+ preferred)

Temperature

55–85°F

13–29°C

pH Range

6–8.5

water acidity

Max Size

2.5"

6.3 cm

Lifespan

2–3 years

typical in captivity

Swim Level

Top

preferred zone

Care Notes

Extremely hardy — tolerates huge temperature and pH ranges. Aggressive fin nipper despite small size. Best in species-only or pond setups.

Feeding

Flakes, pellets, mosquito larvae, and virtually any small food. Not picky at all.

Compatible Tank Mates

None identified.

Use Caution With

White Cloud Mountain Minnow 1.5" Dojo Loach 10" Round-Tailed Paradise Fish 3" Common Goldfish 12" Fancy Goldfish 8"

Incompatible With

Neon Tetra 1.5" Cardinal Tetra 2" Rummy Nose Tetra 2" Ember Tetra 0.8" Black Skirt Tetra 2.5" Serpae Tetra 1.75" Congo Tetra 3.5" Glowlight Tetra 1.5" Harlequin Rasbora 2" Chili Rasbora 0.7" Celestial Pearl Danio 1" Zebra Danio 2"

Check Compatibility

Want to check if Mosquitofish is compatible with a specific fish? Use our compatibility checker to build your complete tank.