Acreichthys radiatus - The Radial Filefish is a cool dwarf filefish reaching only 3" in length, making it suitable for nano reefs and aquariums. They have an interesting commensal relationship with Xeniids and like to spawn and aggregate within Xenia and similar soft coral colonies in aquariums, but don't require them for survival in captivity.
Wild caught Radial Filefish are reef safe "with caution," but we have not observed our captive bred Radial Filefish eating coral. Especially when young, this species may bite down and hold on to a Xenia or soft coral polyp to while they sleep so they aren't swept away. This behavior may be mistaken by the casual observer as the fish eating the coral. They might nibble at at coral mucus and food particles that are trapped in the mucus, but not enough to do harm to their host coral. Reports from reefers and other aquaculture facilities over the past 5+ years point to captive bred Radial Filefish being reef safe, but risk averse reefers should avoid this species if planning to keep them in a diverse mixed reef. Although closely related to the Aiptasia Eating Filefish, the Radial Filefish does not reliably eat pest anemones.
Once a rare species in the aquarium hobby, captive breeding has made this fascinating species more available. Their copper colored banding is striking and has made them a sought after filefish. Captive bred Radial Filefish do well in pairs or small groups in aquariums when added at the same time, and they're peaceful toward other fish species.