I have about 6 of these in my tank all of the sudden and they seem to be nibbling on my zoos and i guess taking on the fluorescence. can anyone ID them and or tell me how i can get rid of them?
It's a predatory Sea Slug. They are not harmless. They will harass your Zoanthis and many species can reproduce. If you have one of those then you need to work hard to get rid of them.
