Species Comparison
Cardinal Tetra vs Sailfin Molly
Verdict:Possible with care
Side-by-side specs
Tetras
Family
Livebearers
2″
Adult size
5″
20gal
Min tank
30gal
73–81°F
Temperature
72–82°F
4.5–7
pH
7.5–8.5
peaceful
Temperament
peaceful
6+
Schooling
3+
mid
Water level
mid
Compatibility notes
- warnCardinal Tetra prefers pH 4.5–7, Sailfin Molly prefers 7.5–8.5 — water chemistry mismatch.