Can siamese algae eaters live with blue gouramis?

Verdict
Yes

Yes. Siamese algae eaters and blue gouramis make a good pair. Both are fine at 75–79°F. Plan on at least 30 gal.

Siamese algae eaterSiamese algae eater75–79°F · pH 6.5–7.5 Blue gouramiBlue gourami72–82°F · pH 6–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–79°Siamese algae eater 75–79°Blue gourami 72–82°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Siamese algae eater 6.5–7.5Blue gourami 6–8
The green band is the pH both tolerate.

Size to scale

Siamese algae eater · 6 inBlue gourami · 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

Siamese algae eaterBlue gourami
Temperature75–79 °F72–82 °F
pH6.5–7.56–8
Adult size6.0 in5.0 in
Minimum tank30 gal30 gal
TemperamentPeacefulSemi-aggressive
Swims atBottomTop
GroupAlone or in pairsAlone or in pairs
DietHerbivoreOmnivore

Better tank mates for siamese algae eaters

All siamese algae eater tank mates

Better tank mates for blue gouramis

All blue gourami tank mates

Questions

Can siamese algae eaters live with blue gouramis?

Yes. Siamese algae eaters and blue gouramis make a good pair. Both are fine at 75–79°F. Plan on at least 30 gal.

What temperature suits both siamese algae eaters and blue gouramis?

75–79 °F. Siamese algae eaters need 75–79 °F, blue gouramis need 72–82 °F.

What size tank do siamese algae eaters and blue gouramis need together?

At least 30 gal, set by the siamese algae eater. Add space for each extra fish.