Can blue gouramis live with assassin snails?

Verdict
Yes

Yes. Blue gouramis and assassin snails make a good pair. Both are fine at 75–80°F. Plan on at least 30 gal.

Blue gouramiBlue gourami72–82°F · pH 6–8 Assassin snailAssassin snail75–80°F · pH 7–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–80°Blue gourami 72–82°Assassin snail 75–80°
The green band is the temperature range both can live in.
456789Both: 7–8Blue gourami 6–8Assassin snail 7–8
The green band is the pH both tolerate.

Size to scale

Blue gourami · 5 inAssassin snail · 1 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

Blue gouramiAssassin snail
Temperature72–82 °F75–80 °F
pH6–87–8
Adult size5.0 in1.0 in
Minimum tank30 gal5 gal
TemperamentSemi-aggressivePeaceful
Swims atTopBottom
GroupAlone or in pairsAlone or in pairs
DietOmnivoreCarnivore

Better tank mates for blue gouramis

All blue gourami tank mates

Better tank mates for assassin snails

All assassin snail tank mates

Questions

Can blue gouramis live with assassin snails?

Yes. Blue gouramis and assassin snails make a good pair. Both are fine at 75–80°F. Plan on at least 30 gal.

What temperature suits both blue gouramis and assassin snails?

75–80 °F. Blue gouramis need 72–82 °F, assassin snails need 75–80 °F.

What size tank do blue gouramis and assassin snails need together?

At least 30 gal, set by the blue gourami. Add space for each extra fish.