Red Rainbowfish tank mates
Glossolepis incisus
5 rated pairings from the Red Rainbowfish care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Red Rainbowfish needs at least 40 gallons on its own; every companion adds to that.
Excellent matches
2 · Same water, complementary zones, no conflict.Boesemani Rainbowfish
Melanotaenia boesemani
30 gal min · 4.5" adult · Peaceful
Similar size, temperament, and water requirements; compatible schooling behavior
Celebes Rainbowfish
Marosatherina ladigesi
20 gal min · 3" adult · Peaceful
Peaceful rainbowfish with matching water parameters and mid-water swimming habits
Good matches
2 · Compatible with normal care — watch space and numbers.
Rummy Nose Tetra
Hemigrammus rhodostomus
15 gal min · 2" adult · Peaceful
Peaceful schooling fish with similar water requirements; avoid very small tetras
Bristlenose Pleco
Ancistrus sp.
20 gal min · 5" adult · Peaceful
Peaceful algae eater that occupies different tank zones; prefers similar warm water
Use caution
1 · Works in the right setup; read the note before combining.
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.