Can peacock cichlids live with boesemani rainbowfish?

Verdict
Yes

Yes, peacock cichlids and boesemani rainbowfish can live together. Both are fine at 76–82°F. Plan on at least 55 gal.

Peacock cichlidPeacock cichlid76–82°F · pH 7.8–8.6 Boesemani rainbowfishBoesemani rainbowfish75–82°F · pH 7–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 76–82°Peacock cichlid 76–82°Boesemani rainbowfish 75–82°
The green band is the temperature range both can live in.
456789Both: 7.8–8Peacock cichlid 7.8–8.6Boesemani rainbowfish 7–8
The green band is the pH both tolerate.

Size to scale

Peacock cichlid · 6 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

Peacock cichlidBoesemani rainbowfish
Temperature76–82 °F75–82 °F
pH7.8–8.67–8
Adult size6.0 in4.0 in
Minimum tank55 gal30 gal
TemperamentSemi-aggressivePeaceful
Swims atMiddleMiddle
GroupGroups of 4+Groups of 6+
DietCarnivoreOmnivore

Better tank mates for peacock cichlids

All peacock cichlid tank mates

Better tank mates for boesemani rainbowfish

All boesemani rainbowfish tank mates

Questions

Can peacock cichlids live with boesemani rainbowfish?

Yes, peacock cichlids and boesemani rainbowfish can live together. Both are fine at 76–82°F. Plan on at least 55 gal.

What temperature suits both peacock cichlids and boesemani rainbowfish?

76–82 °F. Peacock cichlids need 76–82 °F, boesemani rainbowfish need 75–82 °F.

What size tank do peacock cichlids and boesemani rainbowfish need together?

At least 55 gal, set by the peacock cichlid. Add space for each extra fish.