Can clown loaches live with siamese algae eaters?

Verdict
Yes

Yes. Clown loaches and siamese algae eaters make a good pair. Both are fine at 77–79°F. Plan on at least 75 gal.

Clown loachClown loach77–86°F · pH 6–7.5 Siamese algae eaterSiamese algae eater75–79°F · pH 6.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 77–79°Clown loach 77–86°Siamese algae eater 75–79°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Clown loach 6–7.5Siamese algae eater 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Clown loach · 8 inSiamese algae eater · 6 in0"1"2"3"4"5"6"7"8"
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

Clown loachSiamese algae eater
Temperature77–86 °F75–79 °F
pH6–7.56.5–7.5
Adult size8.0 in6.0 in
Minimum tank75 gal30 gal
TemperamentPeacefulPeaceful
Swims atBottomBottom
GroupGroups of 5+Alone or in pairs
DietOmnivoreHerbivore

Better tank mates for clown loaches

All clown loach tank mates

Better tank mates for siamese algae eaters

All siamese algae eater tank mates

Questions

Can clown loaches live with siamese algae eaters?

Yes. Clown loaches and siamese algae eaters make a good pair. Both are fine at 77–79°F. Plan on at least 75 gal.

What temperature suits both clown loaches and siamese algae eaters?

77–79 °F. Clown loaches need 77–86 °F, siamese algae eaters need 75–79 °F.

What size tank do clown loaches and siamese algae eaters need together?

At least 75 gal, set by the clown loach. Add space for each extra fish.