i fink you should kill it because last time i found 1 i left it alone and it ate two breeding sea horses i just chucked it in with a dogfaced puffer after that and let the puffer eat the crab. up to you what you do with it tho
if i buy a malu anemone for my tomato clown will it move around my 2ft nano reef as it is full of frags iv been growin and i dont want the anemone to sit on any of them because last time i had an atlantic that killed my xenia what other anemones would you advise keeping for a clown