Can oscars live with paradise fish?

Verdict
No

No. Oscars and paradise fish should not share a tank. An adult oscar eats fish that fit in its mouth, and at 3.5 inches paradise fish do.

OscarOscar74–81°F · pH 6–8 Paradise fishParadise fish61–79°F · pH 6–8

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 74–79°Oscar 74–81°Paradise fish 61–79°
The green band is the temperature range both can live in.
456789Both: 6–8Oscar 6–8Paradise fish 6–8
The green band is the pH both tolerate.

Size to scale

Oscar · 12 inParadise fish · 3.5 in0"2"4"6"8"10"12"
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

OscarParadise fish
Temperature74–81 °F61–79 °F
pH6–86–8
Adult size12.0 in3.5 in
Minimum tank75 gal20 gal
TemperamentSemi-aggressiveSemi-aggressive
Swims atMiddleTop
GroupAlone or in pairsOne per tank
DietCarnivoreOmnivore

Better tank mates for oscars

All oscar tank mates

Better tank mates for paradise fish

All paradise fish tank mates

Questions

Can oscars live with paradise fish?

No. Oscars and paradise fish should not share a tank. An adult oscar eats fish that fit in its mouth, and at 3.5 inches paradise fish do.

What temperature suits both oscars and paradise fish?

74–79 °F. Oscars need 74–81 °F, paradise fish need 61–79 °F.

What size tank do oscars and paradise fish need together?

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