Can Congo Tetra Live With Blue Tang (Regal Tang)?
Incompatible pH. Congo Tetra needs 6.0–7.5, Blue Tang (Regal Tang) needs 8.1–8.4.
Parameter Comparison
| Parameter | Congo Tetra | Blue Tang (Regal Tang) | Overlap |
|---|---|---|---|
| Temperature | 73–82°F | 75–82°F | 75–82°F ✓ |
| pH Range | 6–7.5 | 8.1–8.4 | No overlap ✗ |
| Temperament | peaceful | semi-aggressive | Monitor ⚠ |
| Max Size | 3.5" | 12" | Size mismatch ✗ |
| Min Tank Size | 30 gal | 75 gal | 75 gal minimum together |
| Diet | Omnivore | Omnivore | — |
| Care Level | intermediate | intermediate | — |
Species Profiles
Congo Tetra
Phenacogrammus interruptus
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 →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 →