Can Oscar Fish Live With Blue Tang (Regal Tang)?
❌Not Compatible
Incompatible pH. Oscar Fish needs 6.0–8.0, Blue Tang (Regal Tang) needs 8.1–8.4.
Ad
Parameter Comparison
| Parameter | Oscar Fish | Blue Tang (Regal Tang) | Overlap |
|---|---|---|---|
| Temperature | 74–81°F | 75–82°F | 75–81°F ✓ |
| pH Range | 6–8 | 8.1–8.4 | No overlap ✗ |
| Temperament | aggressive | semi-aggressive | Aggression risk ✗ |
| Max Size | 14" | 12" | Similar ✓ |
| Min Tank Size | 75 gal | 75 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 →Blue Tang (Regal Tang)
Paracanthurus hepatus
intermediatesemi-aggressive75+ gal
The blue tang — Dory from Finding Nemo — is one of the most recognizable marine fish with its vivid royal blue body, black palette marking, and yellow tail. While stunning, they grow large (up to 12 inches), are highly susceptible to ich, and need tanks of 75+ gallons. They are not beginner fish despite their popularity following the movies.
Full care guide →Other Compatible Tank Mates
For Oscar Fish:
For Blue Tang (Regal Tang):
Ad