I know that they look small, but these guys certainly have some formidable claws... Anyone have any experience with them in a tank with smaller fish? I just got rid of my brittle star cuz fish kept disappearing, so I don't want to back to that roller coaster ride.

Also, I have a cleaner shrimp. Will the two shrimps coexist in a 55gal tank?

As always, thanks for any comments!