Can corydoras live with boesemani rainbowfish?

Verdict
Yes

Yes. Corydoras and boesemani rainbowfish get along in the same tank. Both are fine at 75–79°F. Plan on at least 30 gal.

CorydorasCorydoras72–79°F · pH 6–7.8 Boesemani rainbowfishBoesemani rainbowfish75–82°F · pH 7–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–79°Corydoras 72–79°Boesemani rainbowfish 75–82°
The green band is the temperature range both can live in.
456789Both: 7–7.8Corydoras 6–7.8Boesemani rainbowfish 7–8
The green band is the pH both tolerate.

Size to scale

Corydoras · 2.5 inBoesemani rainbowfish · 4 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

CorydorasBoesemani rainbowfish
Temperature72–79 °F75–82 °F
pH6–7.87–8
Adult size2.5 in4.0 in
Minimum tank20 gal30 gal
TemperamentPeacefulPeaceful
Swims atBottomMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for corydoras

All corydoras tank mates

Better tank mates for boesemani rainbowfish

All boesemani rainbowfish tank mates

Questions

Can corydoras live with boesemani rainbowfish?

Yes. Corydoras and boesemani rainbowfish get along in the same tank. Both are fine at 75–79°F. Plan on at least 30 gal.

What temperature suits both corydoras and boesemani rainbowfish?

75–79 °F. Corydoras need 72–79 °F, boesemani rainbowfish need 75–82 °F.

What size tank do corydoras and boesemani rainbowfish need together?

At least 30 gal, set by the boesemani rainbowfish. Add space for each extra fish.