a crayfish can have up to 100 babies.
crayfish have six antennae
Crayfish have a total of 5 swimmerets
Yes, mouthparts is right. ;-)
A crayfish has one heart that contains two chambers
There are six segments on the abdomen of a crayfish
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Many people think there is no predators of crayfish in England. Well they are morons who don't see many river animals. My mum LOVES crayfish and me and my family are from England and in fact, we caught 4 crayfish today and we got them in a pot. There is actually natural predators. Herons, otters, wild, feral or stray cats, mink and other crayfish eats crayfish.