Can elephant nose fish live with boesemani rainbowfish?

Verdict
Yes

Yes. Elephant nose fish and boesemani rainbowfish make a good pair. Both are fine at 75–82°F. Plan on at least 55 gal.

Elephant nose fishElephant nose fish73–82°F · pH 6–7.5 Boesemani rainbowfishBoesemani rainbowfish75–82°F · pH 7–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–82°Elephant nose fish 73–82°Boesemani rainbowfish 75–82°
The green band is the temperature range both can live in.
456789Both: 7–7.5Elephant nose fish 6–7.5Boesemani rainbowfish 7–8
The green band is the pH both tolerate.

Size to scale

Elephant nose fish · 9 inBoesemani rainbowfish · 4 in0"1"2"3"4"5"6"7"8"9"
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

Elephant nose fishBoesemani rainbowfish
Temperature73–82 °F75–82 °F
pH6–7.57–8
Adult size9.0 in4.0 in
Minimum tank55 gal30 gal
TemperamentSemi-aggressivePeaceful
Swims atBottomMiddle
GroupAlone or in pairsGroups of 6+
DietCarnivoreOmnivore

Better tank mates for elephant nose fish

All elephant nose fish tank mates

Better tank mates for boesemani rainbowfish

All boesemani rainbowfish tank mates

Questions

Can elephant nose fish live with boesemani rainbowfish?

Yes. Elephant nose fish and boesemani rainbowfish make a good pair. Both are fine at 75–82°F. Plan on at least 55 gal.

What temperature suits both elephant nose fish and boesemani rainbowfish?

75–82 °F. Elephant nose fish need 73–82 °F, boesemani rainbowfish need 75–82 °F.

What size tank do elephant nose fish and boesemani rainbowfish need together?

At least 55 gal, set by the elephant nose fish. Add space for each extra fish.