Half Sun Betta tank mates
Betta splendens
4 rated pairings from the Half Sun Betta care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Half Sun Betta needs at least 5 gallons on its own; every companion adds to that.
Good matches
2 · Compatible with normal care — watch space and numbers.
Otocinclus
Otocinclus vittatus
10 gal min · 1.5" adult · Peaceful
Small, peaceful bottom-dweller that won't compete for space or trigger aggression in the upper column
Ramshorn Snail
Planorbarius corneus
5 gal min · 0.75" adult · Peaceful
Peaceful invertebrate that occupies different zones and poses no threat to the betta
Use caution
2 · Works in the right setup; read the note before combining.
Ember Tetra
Hyphessobrycon amandae
10 gal min · 0.8" adult · Peaceful
Small, fast-moving fish that may work in larger tanks but could trigger chasing behavior
Neon Tetra
Paracheirodon innesi
10 gal min · 1.5" adult · Peaceful
Bright coloration may trigger aggression; only suitable in well-planted 10+ gallon tanks
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.