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Rabaulichthys squirei is a species of fish in the family Serranidae. It is found in the Coral Sea, off the coast of Australia. The fish is a member of the genus Rabaulichthys, which also includes the sailfin anthias.
Rabaulichthys squirei is a small fish, reaching a maximum length of 6.4 cm. The fish is reddish overall with pale scale centers. It has a series of irregular reddish-brown bars along the sides, a pale-edged rusty brown band from the snout through the eye and across cheek, and black pelvic fins with red fin rays, other fins pinkish to yellow.
The fish is usually found over open stretches of coral rubble, and therefore avoid the many predators of coral reefs. It forms small aggregations that feed on zooplankton above the substratum.
Rabaulichthys squirei is a relatively new species of fish, having been described in 2010.