Can Discus Live With Blue Tang (Regal Tang)?
Incompatible pH. Discus needs 5.5–7.0, Blue Tang (Regal Tang) needs 8.1–8.4.
Parameter Comparison
| Parameter | Discus | Blue Tang (Regal Tang) | Overlap |
|---|---|---|---|
| Temperature | 82–88°F | 75–82°F | 82–82°F ✓ |
| pH Range | 5.5–7 | 8.1–8.4 | No overlap ✗ |
| Temperament | peaceful | semi-aggressive | Monitor ⚠ |
| Max Size | 8" | 12" | Similar ✓ |
| Min Tank Size | 55 gal | 75 gal | 75 gal minimum together |
| Diet | Carnivore/Omnivore | Omnivore | — |
| Care Level | advanced | intermediate | — |
Species Profiles
Discus
Symphysodon spp.
Discus are widely considered the king of freshwater aquarium fish. Their disk-shaped body, vivid colors, and graceful swimming make them the ultimate showpiece. However, they are among the most demanding freshwater fish to keep, requiring warm, soft, exceptionally clean water, frequent feedings, and a stress-free environment. Discus are not recommended for beginners.
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 →