Can oscars live with yellow labs?

Verdict
No

No. Oscars and yellow labs should not share a tank. An adult oscar eats fish that fit in its mouth, and at 4 inches yellow labs do.

OscarOscar74–81°F · pH 6–8 Electric yellow cichlidElectric yellow cichlid75–82°F · pH 7.8–8.6

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–81°Oscar 74–81°Electric yellow cichlid 75–82°
The green band is the temperature range both can live in.
456789Both: 7.8–8Oscar 6–8Electric yellow cichlid 7.8–8.6
The green band is the pH both tolerate.

Size to scale

Oscar · 12 inElectric yellow cichlid · 4 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

OscarElectric yellow cichlid
Temperature74–81 °F75–82 °F
pH6–87.8–8.6
Adult size12.0 in4.0 in
Minimum tank75 gal40 gal
TemperamentSemi-aggressiveSemi-aggressive
Swims atMiddleAll levels
GroupAlone or in pairsGroups of 4+
DietCarnivoreOmnivore

Better tank mates for oscars

All oscar tank mates

Better tank mates for yellow labs

All electric yellow cichlid tank mates

Questions

Can oscars live with yellow labs?

No. Oscars and yellow labs should not share a tank. An adult oscar eats fish that fit in its mouth, and at 4 inches yellow labs do.

What temperature suits both oscars and yellow labs?

75–81 °F. Oscars need 74–81 °F, yellow labs need 75–82 °F.

What size tank do oscars and yellow labs need together?

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