Can a Gray (Black) Angelfish Live With a Royal Gramma?
✗ Not recommended in most tanksVerdict from our compatibility engine, assuming a typical 90-gallon reef tank. Score: 0/100.
Why
- Size capacity hard block: Tank far too small (90gal for 250.0gal min)
- Reef safety hard block: Not reef-safe — Gray (Black) Angelfish will damage coral/inverts
- Tank heavily stocked (294%) — over recommended load
It can work if…
- Upgrade to a larger tank — this species needs more volume
- Tank is nearing capacity — consider removing a resident before adding this one
- Reef safety concern — relocate or rehome before adding to a reef tank
Both species at a glance
Gray (Black) Angelfish
Pomacanthus arcuatus
- Aggression:
- semi-aggressive
- Min tank:
- 250 gallons
- Reef safe:
- unsafe
- Diet:
- omnivore