Hitchhiker Crab ID?

[kien]

Originally Posted by MarkoD

this guy came in on my purple stylo colony and has never left.

i finally caught him and accidentally pulled off one of his claws while trying to get him off.

anyone know what it is, and if its bad?

should it go down the toilet or in the refugium?]

it looks like a common acro crab to me. They are commonly found hitchhiking in/on acro colonies. Personally I think they are beneficial as they help clean acros by removing debris that might get trapped in acros. At least that's what my acro crabs do. If you don't want him I'm sure there are local hobbyists that will take him. I know I would!