The betta (Betta splendens) is a semi-aggressive fish that grows to about 2.5 inches and spends its time near the surface. Keep only one male per tank, in a tank of 5 gallons or more, at 76–82°F and pH 6–7.5.
5 galsmallest tank
2.5″adult size
76–82°Ftemperature
6–7.5pH
1 maleper tank
Semi-aggressivetemperament
Good tankmates
Avoid
- ✕Black skirt tetra: Betta attacks, or is attacked by, Black skirt tetra.
- ✕Serpae tetra: Betta attacks, or is attacked by, Serpae tetra.
- ✕White cloud mountain minnow: Betta and White cloud mountain minnow need different temperatures (76–82°F vs 60–72°F).
- ✕Tiger barb: Betta attacks, or is attacked by, Tiger barb.
- ✕Gold barb: Betta and Gold barb need different temperatures (76–82°F vs 64–75°F).
- ✕Rosy barb: Betta and Rosy barb need different temperatures (76–82°F vs 64–72°F).
- ✕Guppy: Betta attacks, or is attacked by, Guppy.
- ✕Dwarf gourami: Betta attacks, or is attacked by, Dwarf gourami.
From TankCoach's own species data: common hobby guidance for adults, rounded. Individual fish vary. Not veterinary advice.