As with other groupers, this species soon learns
to accept any kind of flesh such as squid, cockle, lancefish, etc. This species in
particular is hostile to other fishes of this genus and even other fishes of this species.
Even a male and female will be mutually hostile if placed together out of the breeding
season and so it is preferable to keep them individually rather than in pairs. Many marine
fishes, and the groupers are no exception, have the ability speedily to change their
colouration to match a particular shade in the environment or simply to display an
emotion. An indication of the hardiness of this fish is its tremendously successful
ability to colonise the tropical oceans of the world.
Cephalopholis boenacki has been reported from places as far apart as East Africa and
Singapore. As with other large groupers, feeding presents no problem. When the fish has
once settled into its new home, it should be given a day or so before food is offered. The
new owner should be sympathetic enough to realise that capture, air freight and
introduction to aquarium life is a disturbing experience for most fishes. For a highly
territorial animal like the grouper which derives its psychological security from total
familiarity with a small area, this sudden removal into an entirely habitat may border on
the traumatic.