Species Comparison
Marbled Hatchetfish vs Molly
Verdict:Not compatible
Side-by-side specs
Hatchetfish
Family
Livebearers
1.5″
Adult size
4″
15gal
Min tank
20gal
75–82°F
Temperature
72–82°F
5.5–7
pH
7.5–8.5
peaceful
Temperament
peaceful
6+
Schooling
3+
top
Water level
mid
Compatibility notes
- warnMarbled Hatchetfish prefers pH 5.5–7, Molly prefers 7.5–8.5 — water chemistry mismatch.
- criticalMolly grows large enough (4") to eat Marbled Hatchetfish (1.5").