Can rummy nose tetras live with mollies?

Verdict

Yes, with care

Yes, with care. Rummy nose tetras and mollies can share a tank, but watch one thing. Different water: rummy nose tetras want pH 5.5–7, mollies want pH 7.5–8.5.

Rummy nose tetra75–84°F · pH 5.5–7

Molly72–82°F · pH 7.5–8.5

What to watch

Watch outDifferent water: rummy nose tetras want pH 5.5–7, mollies want pH 7.5–8.5.

What works

Both are fine at 75–82°F.
They use different parts of the tank: rummy nose tetras the mid, mollies the top.

Water side by side

The green band is the temperature range both can live in.

No pH suits both. One would live in the wrong water all the time.

Size to scale

Adult length in an aquarium. A fish can swallow anything that fits in its mouth, roughly a third to half its own length for predators.

Care at a glance

	Rummy nose tetra	Molly
Temperature	75–84 °F	72–82 °F
pH	5.5–7	7.5–8.5
Adult size	2.0 in	4.0 in
Minimum tank	20 gal	20 gal
Temperament	Peaceful	Peaceful
Swims at	Middle	Top
Group	Groups of 6+	Groups of 3+
Diet	Omnivore	Omnivore

Better tank mates for rummy nose tetras

All rummy nose tetra tank mates

Better tank mates for mollies

All molly tank mates

Questions

Can rummy nose tetras live with mollies?

Yes, with care. Rummy nose tetras and mollies can share a tank, but watch one thing. Different water: rummy nose tetras want pH 5.5–7, mollies want pH 7.5–8.5.

What temperature suits both rummy nose tetras and mollies?

75–82 °F. Rummy nose tetras need 75–84 °F, mollies need 72–82 °F.

What size tank do rummy nose tetras and mollies need together?

At least 20 gal, set by the rummy nose tetra. Add space for each extra fish.