Queen Angelfish
The showpiece large angel of the Caribbean — electric blue and gold with a crowned blue-ringed spot on the forehead — bold, intelligent and enormous at nearly half a metre. It is a semi-aggressive, dominant fish that needs a very large fish-only or FOWLR system with open swimming room and aged rock to graze, and it should be added last. It is not reef-safe: in the wild it eats mostly sponges but in a reef it nips stony and soft corals, sponges, tunicates and clam mantles. An advanced keeper's centrepiece, and a heavy waste producer.
Tankmates
How Queen Angelfish gets on with the rest of the reef, checked pair by pair by the same engine as the live pre-flight.
Best kept apart
A real clash — aggression, predation or a same-genus fight.
Keep an eye on these
Usually fine, but worth watching in a smaller tank.
Good tankmates
No conflicts — a few popular ones to start with.
