Species Comparison
Male Betta vs Threadfin Rainbowfish
Verdict:Compatible
Side-by-side specs
Anabantoids
Family
Rainbowfish
2.5″
Adult size
1.5″
5gal
Min tank
15gal
76–82°F
Temperature
75–82°F
6.5–7.5
pH
5.5–7.5
semi-aggressive
Temperament
peaceful
Solitary
Schooling
6+
top
Water level
mid