Rainbow Shark tank mates
Epalzeorhynchos frenatum
6 rated pairings from the Rainbow Shark care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Rainbow Shark needs at least 55 gallons on its own; every companion adds to that.
Excellent matches
1 · Same water, complementary zones, no conflict.
Good matches
3 · Compatible with normal care — watch space and numbers.
Bristlenose Pleco
Ancistrus sp.
20 gal min · 5" adult · Peaceful
Larger and more robust than Otocinclus; can hold their own against mild aggression
Diamond Tetra
Moenkhausia pittieri
15 gal min · 2.5" adult · Peaceful
Mid-water swimmers that avoid competition with bottom-dwelling shark
Rummy Nose Tetra
Hemigrammus rhodostomus
15 gal min · 2" adult · Peaceful
Fast-moving schooling fish that stay in upper water column away from shark
Use caution
2 · 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.