Featherfin Tetra tank mates
Hemigrammus unilineatus
6 rated pairings from the Featherfin Tetra care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Featherfin Tetra needs at least 20 gallons on its own; every companion adds to that.
Excellent matches
5 · Same water, complementary zones, no conflict.
Neon Tetra
Paracheirodon innesi
10 gal min · 1.5" adult · Peaceful
Similar size and peaceful temperament; both thrive in soft, slightly acidic water
Glowlight Tetra
Hemigrammus erythrozonus
10 gal min · 1.5" adult · Peaceful
Peaceful schooling tetra with compatible water requirements
Harlequin Rasbora
Trigonostigma heteromorpha
10 gal min · 2" adult · Peaceful
Peaceful mid-water schooler with overlapping water parameter needs
Pygmy Corydoras
Corydoras pygmaeus
10 gal min · 1" adult · Peaceful
Peaceful bottom dweller that won't compete for space with mid-water tetras
Otocinclus
Otocinclus vittatus
10 gal min · 1.5" adult · Peaceful
Peaceful algae eater that occupies a different niche and shares compatible water parameters
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.