Can Goldfish Live With Oscar?
No, goldfish need 60-72F while oscars need 74-81F, and oscars will eat goldfish given the chance.
Why
- Goldfish thrive in 60-72F. Oscars thrive in 74-81F. No overlap exists.
- Oscars grow to 12-14 inches and are predatory cichlids that treat small fish as food.
- Goldfish in the 4-6 inch range fit in an oscar mouth. Even larger goldfish get nipped.
- pH overlaps at 7.0-8.0, but temperature and predation make this pairing dangerous for goldfish.
What could go wrong
Oscars catch goldfish and maul them. Goldfish have delicate scales and oscars have strong jaws. One encounter is often fatal.
If you keep them in separate tanks
Sized for the 75 gallon minimum this pairing needs. Affiliate links — we earn a small commission if you buy through them.
Fluval 307 Performance Canister Filter
Oversized filtration is what lets you stock two species together without water quality crashing. Rated for a tank slightly larger than the 75 gallon minimum.
API Freshwater Master Test Kit
Keep ammonia, nitrite, and nitrate in check. Two-species tanks have more bioload and less margin for error than single-species setups.
Better pairings to consider
Goldfish do well with white cloud mountain minnows, rosy barbs, or other temperate community fish. Oscars do well with other large cichlids, large plecos, or clown loaches.
Related compatibility questions
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