The Neogonodactulus wennerae is type of mantis shrimp that very hardy and active. The ones that we get are usually in between 1 3/4 inches to 2 3/4 inches in lenght. They can be a variety of colors, from a light cream, to a brighter green with a checkered sort of pattern. We find them in shallow grass flats and shallow rubble area. They are smasher mantis shrimp.
Mantis shrimp are very aggressive and are usually reserved for a species only tank. I would not recommend mixing them with any other fish, shrimp, crab, or thin-shelled snail. I would also not recommend handling them. For more information on mantis shrimp, go to Dr. Roy Caldwells excellent site dedicated exclusively to mantis shrimp. Click or copy and past this link to go directly to this shrimp on his site: