Procambarus Clarkii sp. "Ghost" Mating

I don't know much about crayfish. A few friends often asked me to import some for them as I know a pretty serious crayfish breeder in Taiwan, so I have seen more crayfish than I wanted ;-)

These came in couple days ago, and right after a long journey in their separated bags, this was the first thing they did after put into their temporary home before going to their final destination.

I was told that female cray with single claw would be reluctant to mate as they play an important part in the mating. You'll see why in this picture. The male has to grab the female the entire duration. Sort of a forced action, isn't it ;-)