Can axolotls live with rummy nose tetras?

Verdict

No. Axolotls and rummy nose tetras should not share a tank. Axolotls are coldwater animals (60–66°F); rummy nose tetras need 75–84°F. No temperature suits both.

Axolotl60–66°F · pH 6.5–8

Rummy nose tetra75–84°F · pH 5.5–7

What to watch

Deal breakerAxolotls are coldwater animals (60–66°F); rummy nose tetras need 75–84°F. No temperature suits both.
Deal breakerAt 10 inches an axolotl can swallow a 2-inch rummy nose tetra whole.
Deal breakerFish nibble at axolotl gills, and axolotls swallow small fish. Keep axolotls on their own.

What works

pH 6.5–7 suits both.
They use different parts of the tank: axolotls the bottom, rummy nose tetras the mid.

Water side by side

The ranges do not meet, so one of them would always be too warm or too cold.

The green band is the pH both tolerate.

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

	Axolotl	Rummy nose tetra
Temperature	60–66 °F	75–84 °F
pH	6.5–8	5.5–7
Adult size	10.0 in	2.0 in
Minimum tank	20 gal	20 gal
Temperament	Peaceful	Peaceful
Swims at	Bottom	Middle
Group	Alone or in pairs	Groups of 6+
Diet	Carnivore	Omnivore

Better tank mates for rummy nose tetras

All rummy nose tetra tank mates

Questions

Can axolotls live with rummy nose tetras?

No. Axolotls and rummy nose tetras should not share a tank. Axolotls are coldwater animals (60–66°F); rummy nose tetras need 75–84°F. No temperature suits both.

What temperature suits both axolotls and rummy nose tetras?

None. Axolotls need 60–66 °F and rummy nose tetras need 75–84 °F, so the ranges do not meet.

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

At least 20 gal, set by the axolotl. Add space for each extra fish.