Red Eye Tetra tank mates
Moenkhausia sanctaefilomenae
5 rated pairings from the Red Eye Tetra care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Red Eye Tetra needs at least 20 gallons on its own; every companion adds to that.
Excellent matches
4 · Same water, complementary zones, no conflict.
Neon Tetra
Paracheirodon innesi
10 gal min · 1.5" adult · Peaceful
Similar size and peaceful temperament; excellent schooling companion
Rummy Nose Tetra
Hemigrammus rhodostomus
15 gal min · 2" adult · Peaceful
Compatible water parameters and peaceful behavior; similar schooling needs
Harlequin Rasbora
Trigonostigma heteromorpha
10 gal min · 2" adult · Peaceful
Similar size and peaceful schooling behavior; compatible water parameters
Bristlenose Pleco
Ancistrus sp.
20 gal min · 5" adult · Peaceful
Peaceful algae eater that occupies bottom zone without competing
Good matches
1 · Compatible with normal care — watch space and numbers.Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.