I'll agree, very hardy, peaceful fish. Mine has never touched any shrimp. They do like a cave type spot to hang out, and aren't the most active swimmers, but are very cool to watch when they do. Mine is also a slow eater and doesn't actively go after food like the other fish. (I put some pellets or mysis chunks on the bottom near his hangout and he'll slowly swoop in and pick them up.) Very cool reef fish, IMO.