Can rummy nose tetras live with paradise fish?

Verdict
Yes

Yes, rummy nose tetras and paradise fish can live together. Both are fine at 75–79°F. Plan on at least 20 gal.

Rummy nose tetraRummy nose tetra75–84°F · pH 5.5–7 Paradise fishParadise fish61–79°F · pH 6–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–79°Rummy nose tetra 75–84°Paradise fish 61–79°
The green band is the temperature range both can live in.
456789Both: 6–7Rummy nose tetra 5.5–7Paradise fish 6–8
The green band is the pH both tolerate.

Size to scale

Rummy nose tetra · 2 inParadise fish · 3.5 in0"1"2"3"4"5"6"
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 tetraParadise fish
Temperature75–84 °F61–79 °F
pH5.5–76–8
Adult size2.0 in3.5 in
Minimum tank20 gal20 gal
TemperamentPeacefulSemi-aggressive
Swims atMiddleTop
GroupGroups of 6+One per tank
DietOmnivoreOmnivore

Better tank mates for rummy nose tetras

All rummy nose tetra tank mates

Better tank mates for paradise fish

All paradise fish tank mates

Questions

Can rummy nose tetras live with paradise fish?

Yes, rummy nose tetras and paradise fish can live together. Both are fine at 75–79°F. Plan on at least 20 gal.

What temperature suits both rummy nose tetras and paradise fish?

75–79 °F. Rummy nose tetras need 75–84 °F, paradise fish need 61–79 °F.

What size tank do rummy nose tetras and paradise fish need together?

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