Halfmoon Betta tank mates
Betta splendens 'Halfmoon'
5 rated pairings from the Halfmoon Betta care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Halfmoon Betta needs at least 5 gallons on its own; every companion adds to that.
Good matches
3 · Compatible with normal care — watch space and numbers.
Otocinclus
Otocinclus vittatus
10 gal min · 1.5" adult · Peaceful
Peaceful bottom-dweller that won't trigger aggression; requires similar water parameters
Ramshorn Snail
Planorbarius corneus
5 gal min · 0.75" adult · Peaceful
Non-threatening invertebrate; helps with algae control without competing for space
Nerite Snail
Neritina natalensis
5 gal min · 1" adult · Peaceful
Peaceful scavenger that occupies different zones; minimal interaction with 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 may trigger chase response; only in larger 10+ gallon tanks with dense plants
Ghost Shrimp
Palaemonetes paludosus
5 gal min · 1.5" adult · Peaceful
May be viewed as prey; only suitable if betta is well-fed and tank is heavily planted
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.