This rockfish look-alike is actually a member of the sculpin family. Red Irish lords are masters of camouflage within their preferred habitat. Their bright red color makes the Irish lord blend in with coralline algae and the bright anemones.
There are two main species of Irish lord, the red and the brown. The red Irish lord is a sit-and-wait predator and will hide in rock crevices along the bottom of the ocean until a crab, shrimp, mussel, or barnacle passes by. They will strike out to capture their prey before returning to their hiding spot.