what is the right temp for breeding crayfish

[CHUPA CABRA]

i was wondering what is the right temp for breeding blue crayfish
i have a heated tank and a non heated tank and in both tank the crayfish are mating but no eggs
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[FishFreak95]

There are many blue crayfish species. If its a procambarus sp. Id say 75 F
And it takes a while after mating for her to be in berry

 

[CHUPA CABRA]

i think is an electric blue
thanks