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I just added an Arrow crab. Was that a mistake?You are probably overfeeding, the population should be self sustaining. However if you really like feeding a lot, yellow coris, sixline, melanarus and others wrasses eat them as well as some inverts like arrow crabs. Arrows are not considered reef safe though unless you get insanely lucky
I just added an Arrow crab. Was that a mistake?
Thanks, I'll keep an eye on him.Usually if the crab is well fed they won't go after corals. Or you could get lucky and it will be a perfect angel and only eats bristleworms and pellets. However if you see sudden coral damage I would remove him just in case it is him. Perhaps he can stay in the sump until you find the cause which could possibly be the crab.

