Um- I don't know a Ton, but I know some,lol.
I've always fed mine veggies/fruit/live fish/algae.
They get rather large and will attack your fish.
LOVE hiding places and will gladly dig your plants up to their liking.
They CLIMB! Make sure your tank is covered.
I always had a place where mine could get out of the water. ( a piece of wood sticking outta the water.)
They CAN pinch-and it does hurt when they are larger,lol.
Baby crayfish make great fish food.
They are territorial. Will kill each other sometimes.
They dont like being petted and coddled.
They will eat out of your hands (SO much fun to see!)
You'll love yours that's for sure.
HTH"s