Squirrelfish are nocturnal fish that remains alert when the rest of the reef is fast asleep. The pronounced eye belies their nocturnal ways. While the Squirrelfish, with its large eyes and reds, silver colors predominating, may look defenseless, it has venomous preopercle spines (near the gills). These fish are often seen in groups and hide under rock ledges and inside caves and caverns during the day. They eat meaty seafoods, flakes, and pellets. Squirrelfish are compatible with most fish, however, they will readily consume small shrimps or crabs.