Can Blue Tang (Regal Tang) Live With Silver Arowana?
❌Not Compatible
Incompatible pH. Blue Tang (Regal Tang) needs 8.1–8.4, Silver Arowana needs 6.0–7.5.
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Parameter Comparison
| Parameter | Blue Tang (Regal Tang) | Silver Arowana | Overlap |
|---|---|---|---|
| Temperature | 75–82°F | 75–82°F | 75–82°F ✓ |
| pH Range | 8.1–8.4 | 6–7.5 | No overlap ✗ |
| Temperament | semi-aggressive | aggressive | Aggression risk ✗ |
| Max Size | 12" | 36" | Similar ✓ |
| Min Tank Size | 75 gal | 125 gal | 125 gal minimum together |
| Diet | Omnivore | Carnivore | — |
| Care Level | intermediate | advanced | — |
Species Profiles
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 →Silver Arowana
Osteoglossum bicirrhosum
advancedaggressive125+ gal
The Silver Arowana (Osteoglossum bicirrhosum) is a advanced-level freshwater fish growing to 36 inches. Aggressive temperament, minimum 125 gallon tank.
Full care guide →Other Compatible Tank Mates
For Blue Tang (Regal Tang):
For Silver Arowana:
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