How to catch a crab!

[knhs0811]

Any ideas? I have a small (1-2in) crab looking creature that I didn't put in my tank and I want him out of there!!! Any ideas for a trap??? :help: :help: :help: :notsure: :notsure: :notsure:

 

[fallinmor]

tank a 20 oz. soda bottle cut the top off and glue it on backwards so the neck faces in the bottle. i did the same thing but put small netting over the top so none of the other fish could gte in but the pest could. does the crab have pointy claws? cuz if it doesn't it's probably not harmful to fiah and would be easier to leave him in.