Can Betta Fish Live With Blue Tang (Regal Tang)?
Incompatible pH. Betta Fish needs 6.5–7.5, Blue Tang (Regal Tang) needs 8.1–8.4.
Parameter Comparison
| Parameter | Betta Fish | Blue Tang (Regal Tang) | Overlap |
|---|---|---|---|
| Temperature | 76–82°F | 75–82°F | 76–82°F ✓ |
| pH Range | 6.5–7.5 | 8.1–8.4 | No overlap ✗ |
| Temperament | semi-aggressive | semi-aggressive | Monitor ⚠ |
| Max Size | 3" | 12" | Size mismatch ✗ |
| Min Tank Size | 5 gal | 75 gal | 75 gal minimum together |
| Diet | Carnivore | Omnivore | — |
| Care Level | beginner | intermediate | — |
Species Profiles
Betta Fish
Betta splendens
The Betta fish (Siamese fighting fish) is one of the most popular freshwater aquarium fish in the world, known for its stunning flowing fins and vibrant colors. Males are territorial and should be kept alone or with carefully chosen tank mates. Despite their reputation as low-maintenance fish, bettas thrive best in heated, filtered tanks of at least 5 gallons.
Full care guide →Blue Tang (Regal Tang)
Paracanthurus hepatus
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 →