Turquoise Rainbowfish tank mates
Melanotaenia lacustris
5 rated pairings from the Turquoise Rainbowfish care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Turquoise Rainbowfish needs at least 30 gallons on its own; every companion adds to that.
Excellent matches
3 · Same water, complementary zones, no conflict.
Rummy Nose Tetra
Hemigrammus rhodostomus
15 gal min · 2" adult · Peaceful
Similar size, peaceful temperament, and identical water parameter requirements make them ideal mid-column companions
Harlequin Rasbora
Trigonostigma heteromorpha
10 gal min · 2" adult · Peaceful
Comparable size and schooling behavior; both species appreciate groups and thrive in identical water conditions
Bristlenose Pleco
Ancistrus sp.
20 gal min · 5" adult · Peaceful
Nocturnal bottom-feeder that doesn't compete for space or food; helps maintain tank cleanliness
Good matches
2 · Compatible with normal care — watch space and numbers.Dwarf Gourami
Trichogaster lalius
15 gal min · 3.5" adult · Semi-aggressive
Peaceful, similar temperature range, though males may occasionally display; provide adequate space and plants
Red Cherry Shrimp
Neocaridina davidi
5 gal min · 1.2" adult · Peaceful
Small shrimp are generally safe; however, very young shrimp may be eaten; larger adults coexist peacefully
Also recommended alongside Turquoise Rainbowfish
Species whose own guides list Turquoise Rainbowfish as a tank mate.
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.