mshill90;5092027; said:22-42 days is the berried length time.
This is the BEST website for info..
http://www.marbledcrayfish.com/marbledcrayfish/Welcome.html
Meh, don't promote that website.
Not all of his information is correct or accurate, he's been busted any number of times selling fakes (even though his page warns about them) and he's promotes situations that can lead to invasive issues or tank issues.
He's got some good information, but if you don't know how to weed out the good from the bad... If you want good information, check out the leading researcher on Marmorkrebs, his name is Zen Faulkes. He's got a few webpages, a FB, and readily responds to inquiries on the species. Nice guy, real helpful.