Colombian Tetra tank mates
Hyphessobrycon columbianus
4 rated pairings from the Colombian Tetra care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Colombian Tetra needs at least 20 gallons on its own; every companion adds to that.
Excellent matches
1 · Same water, complementary zones, no conflict.
Good matches
2 · Compatible with normal care — watch space and numbers.
Emerald Dwarf Rasbora
Danio erythromicron
10 gal min · 1" adult · Peaceful
Similar size and water parameters; peaceful nature helps balance Colombian tetra aggression in larger schools
Rummy Nose Tetra
Hemigrammus rhodostomus
15 gal min · 2" adult · Peaceful
Similar tetra with comparable aggression levels; schooling together reduces individual stress
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.