Gold Medaka tank mates
Oryzias latipes
6 rated pairings from the Gold Medaka care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Gold Medaka needs at least 10 gallons on its own; every companion adds to that.
Excellent matches
4 · Same water, complementary zones, no conflict.Ricefish
Oryzias woworae
10 gal min · 1.5" adult · Peaceful
Same species, identical water requirements and peaceful temperament
Least Killifish
Heterandria formosa
5 gal min · 1.5" adult · Peaceful
Similar size, peaceful, and compatible water parameters
Ramshorn Snail
Planorbarius corneus
5 gal min · 0.75" adult · Peaceful
Peaceful algae eaters that don't compete for food or space
Nerite Snail
Neritina natalensis
5 gal min · 1" adult · Peaceful
Hardy, peaceful, and beneficial for algae control without competing
Good matches
2 · Compatible with normal care — watch space and numbers.
Also recommended alongside Gold Medaka
Species whose own guides list Gold Medaka as a tank mate.
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.