Can apistogramma live with clown plecos?

Verdict
Yes

Yes. Apistogramma and clown plecos get along in the same tank. Both are fine at 75–82°F. Plan on at least 20 gal.

ApistogrammaApistogramma75–84°F · pH 5–7 Clown plecoClown pleco73–82°F · pH 6.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–82°Apistogramma 75–84°Clown pleco 73–82°
The green band is the temperature range both can live in.
456789Both: 6.5–7Apistogramma 5–7Clown pleco 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Apistogramma · 3 inClown pleco · 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

ApistogrammaClown pleco
Temperature75–84 °F73–82 °F
pH5–76.5–7.5
Adult size3.0 in3.5 in
Minimum tank20 gal20 gal
TemperamentSemi-aggressivePeaceful
Swims atBottomBottom
GroupAlone or in pairsAlone or in pairs
DietCarnivoreHerbivore

Better tank mates for apistogramma

All apistogramma tank mates

Better tank mates for clown plecos

All clown pleco tank mates

Questions

Can apistogramma live with clown plecos?

Yes. Apistogramma and clown plecos get along in the same tank. Both are fine at 75–82°F. Plan on at least 20 gal.

What temperature suits both apistogramma and clown plecos?

75–82 °F. Apistogramma need 75–84 °F, clown plecos need 73–82 °F.

What size tank do apistogramma and clown plecos need together?

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