most got special diet requirements, u buy u can only probably keep for a while, these are better left in the ocean, only exception is the berghia nudi, which is obligate apitasia eater but once no more apitasia means will also starve. Some nudis are also pest and will eat corals so be careful. My Rule of thumb in reefing: if most reefer not keeping and its not due to price tag; better dont buy haha.. Sent from Singapore Reef Club mobile app