crawdad

Hi all, I have bamboo shrimp, a couple of cherry shrimp and a couple of Mexican dwarf crawdaddies. What is this little guy?

I have a 55 Gal Breeder WIDE tank that I want to make into a crayfish dedicated tank. Looking to get some Electric Blues to Breed hopefully (if you have any sites that sell that and would like to recommend please do). My tank is ment to house animals like snakes and lizards but I am pretty sure...