Hitchhiker

[Murtle]

Cycling my first 30 gallon saltwater tank and found this little guy in the rocks. I was told to put him in the sump as he may eat small fish and corals and since I don't know what he is. Anyone have an idea what he is? Just curiosity now before I try to catch the little bugger. Thanks.

[Karsten]

Looks like a mantis shrimp.
Bring it back to the store

[Nate]

Lol... Not a mantis

[Coral Hoarder]

Lol not a mantis it's some kind of bad crab

[Murtle]

I don't like the words "bad" crab. lol. Yikes.