I had a red coris for years, years ago. Absolutely not a problem with other fish, although I didn't keep anything closer related than a fairy wrasse, which he ignored. Clean up crew was not a problem, don't plan on peppermint shrimp, but you fish selection is pretty limited if you want those. Mine might eat hermits and snails sporadically, but most were fine for days or weeks. Very different from a harlequin tusk, which attacked new hermits and snails in seconds. More like keeping coral with a flame angel. Absolutely would have another if I had a large deep sandbed, bare bottom right now.