The Arrow Grouper is seldom seen in the hobby being a reclusive cave dwelling species. They seldom display aggression towards interspecifics, they are lethal predators of smaller fish and inverts that fit into its mouth. They slowly approach the prey by undulating its dorsal and anal fins and then, with incredible speed, swoops down to capture its victim.
The Arrow Grouper will feed on Live Feeder Shrimp, but can be difficult to switch to prepared foods such as frozen lance fish or krill. It is best to aquascape the aquarium with plenty of caves and live rock overhangs under which it can hover.
They should be kept singly in the aquarium with other small grouper species preferring a dimly lit environment.
Caution: This species can produce the skin toxin grammistin, which when stressed or injured may kill the fish in the aquarium.