I've kept C. rostratus (multiples), C. ulietensis (3), C. lunula (multiples), F. flavissimus, H. diphreutes (multiples), H. acuminatus (multiples), and 2 C. capistratus (caribbean, four eye). The four eyes are generally not safe w/corals, and I've had occasional problems with H. acuminatus, mainly regarding compromised/terminal corals. Otherwise, they were fine.