umm i tell you right here right now that unless you have got a 30,000L pond the australian blueclaw will not breed. sexing is impossible. go to your local library and borrow out a book called crayfish farming or sumthin like that
tad funny cose i actually do have yabbies that are breeding in a fish bin out the back. all i do is heat it to 29 degrees. funny that. lmao 30,000 pfft try 30 gallons with 50 yabbies in there