Species Comparison
Cardinal Tetra vs Rosy Barb
Verdict:Possible with care
Side-by-side specs
Tetras
Family
Barbs
2″
Adult size
4″
20gal
Min tank
30gal
73–81°F
Temperature
64–75°F
4.5–7
pH
6–7.5
peaceful
Temperament
fin-nipper
6+
Schooling
6+
mid
Water level
mid
Compatibility notes
- warnCardinal Tetra and Rosy Barb only narrowly overlap in temperature — keep within 73–75°F.