Can Oscar Fish Live With Congo Tetra?
❌Not Compatible
Oscar Fish is aggressive and will likely attack or stress tank mates.
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Parameter Comparison
| Parameter | Oscar Fish | Congo Tetra | Overlap |
|---|---|---|---|
| Temperature | 74–81°F | 73–82°F | 74–81°F ✓ |
| pH Range | 6–8 | 6–7.5 | 6–7.5 ✓ |
| Temperament | aggressive | peaceful | Aggression risk ✗ |
| Max Size | 14" | 3.5" | Size mismatch ✗ |
| Min Tank Size | 75 gal | 30 gal | 75 gal minimum together |
| Diet | Carnivore | Omnivore | — |
| Care Level | intermediate | intermediate | — |
Species Profiles
Oscar Fish
Astronotus ocellatus
intermediateaggressive75+ gal
Oscars are large, intelligent South American cichlids often called 'water dogs' for their interactive personality. They recognize their owners, beg for food, and can be hand-fed. However, they grow fast, produce massive waste, and need at least a 75-gallon tank.
Full care guide →Congo Tetra
Phenacogrammus interruptus
intermediatepeaceful30+ gal
Congo tetras are the showstoppers of the tetra family. Males develop spectacular flowing fins with an iridescent rainbow sheen that shifts from blue to gold to green under aquarium lighting. They are larger than most tetras (up to 3.5 inches) and need a spacious, well-planted tank to display their full beauty. Peaceful but shy — they thrive with calm tank mates.
Full care guide →Other Compatible Tank Mates
For Oscar Fish:
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