Fantail Filefish
The fantail filefish is a Hawaiian reef fish (rare strays reach Johnston Atoll) growing to about 18 cm, and one of the hardier filefish in the trade — most specimens transition to frozen and prepared foods without much fuss. In the wild it grazes algae, small benthic invertebrates and coral polyps, so treat it as reef-caution rather than reef-safe: it will pick at ornamental snails/worms and nip coral tissue given the chance. Best kept singly (or as an established pair) in a tank of roughly 200+ litres with plenty of live rock to browse.
Tankmates
How Fantail Filefish 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.
Good tankmates
No conflicts — a few popular ones to start with.
