Mosquitofish tank mates
Gambusia affinis
5 rated pairings from the Mosquitofish care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Mosquitofish needs at least 10 gallons on its own; every companion adds to that.
Excellent matches
2 · Same water, complementary zones, no conflict.
Ramshorn Snail
Planorbarius corneus
5 gal min · 0.75" adult · Peaceful
Peaceful invertebrate that won't compete; helps with algae control and waste management
Malaysian Trumpet Snail
Melanoides tuberculata
5 gal min · 0.75" adult · Peaceful
Burrowing snail that aerates substrate; mosquitofish ignore them completely
Good matches
2 · Compatible with normal care — watch space and numbers.
Use caution
1 · Works in the right setup; read the note before combining.
Also recommended alongside Mosquitofish
Species whose own guides list Mosquitofish as a tank mate.
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.