Cyclic dimorphism of Procambarus clarkii

xipo817

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Today I found an interesting article.
I didn't know cyclic dimorphism of crayfish but this paper explained it very well.
In short reproductive male and female has larger chelae and non-reproductive smaller.
Also reproductive male has hooks on pereiopods.
And based on this paper it seemed that my P.clarkii pair was in form 1(reproductive form), so I put them together and it succeeded!
They are mating peacefully with no injuries!

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