Species Comparison
Molly vs Rummynose Tetra
Verdict:Possible with care
Side-by-side specs
Livebearers
Family
Tetras
4″
Adult size
2″
20gal
Min tank
20gal
72–82°F
Temperature
75–82°F
7.5–8.5
pH
5.5–7
peaceful
Temperament
peaceful
3+
Schooling
6+
mid
Water level
mid
Compatibility notes
- warnMolly prefers pH 7.5–8.5, Rummynose Tetra prefers 5.5–7 — water chemistry mismatch.