Can Male Betta and Dwarf Rasbora live together?

Male Betta and Dwarf Rasbora are not compatible. The comparison on this page runs the same compatibility engine as the tank builder, checking temperature and pH overlap, predation by size, temperament, and known hard-pair conflicts.

Species Comparison

Male Betta vs Dwarf Rasbora

Verdict:Not compatible

Side-by-side specs

Anabantoids

Family

Rasboras

2.5″

Adult size

1″

5gal

Min tank

5gal

76–82°F

Temperature

75–82°F

6.5–7.5

4.5–6.5

semi-aggressive

Temperament

peaceful

Solitary

Schooling

top

Water level

mid

Compatibility notes

criticalMale Betta grows large enough (2.5") to eat Dwarf Rasbora (1").

Try both in the builder →Compare different species