Double Tail Betta tank mates
Betta splendens 'Double Tail'
5 rated pairings from the Double Tail Betta care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Double Tail Betta needs at least 5 gallons on its own; every companion adds to that.
Excellent matches
2 · Same water, complementary zones, no conflict.
Good matches
2 · Compatible with normal care — watch space and numbers.
Otocinclus
Otocinclus vittatus
10 gal min · 1.5" adult · Peaceful
Peaceful bottom-dweller that won't compete for space or trigger aggression in a 10+ gallon tank
Corydoras Duplicareus
Corydoras duplicareus
15 gal min · 2.2" adult · Peaceful
Docile catfish that occupies the bottom zone and avoids conflict with surface-dwelling bettas
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.