Crawfish, crayfish, yabbies are some common names when searching for info on this species.
They don't like heaters, keep it at room temp. They like plants and caves.
Check out this site
website for info on keeping, identifying the sex of and breeding them. Good links page there too.
For what it's worth, do not house it with anything else since it is a oportunistic hunter that will shread fins of it's tank mates and/or kill them.
Bunk you say? Yeah, I said that too. Till the carnage began.
5 fish in my 110 still show war wounds from having my blue lobster as a tank mate for a month or so.
The only thing she didn't get was the cory cats.
She is now seperated from them in her own tank.
For more info on the species check out the invertibrate section of this forum.