First crab recommend

I've heard that because they anemone (pom pom crab?) is a type of decorator that he will hurt corals etc by trying to decorate with them. Is this true in your experience?

A pom pom crab isn't the same as an anemone crab. An anemone crab is a filter feeder like a porcelain crab is.

I love both the anemone and porcelain crabs I've had.
 
How much do porcelain crabs usually cost? I really would like to get a crab since I'm pretty much fully stocked on fish but I don't want to shell out a ton of money if my lovely little valentini puffer is going to try and munch on it!
 
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