Not yet - but mine were off last spring's hatch, and I just moved the tanks into the pair's respective pens. They are starting to show gender-based behavior differences - the males are more noisy and agressive and the girls more retiring - but nothing I can say "that is mating behavior" yet.
A question about management:
I've been keeping the pairs penned separately at night, with the pens side by side (yes, each pair can see each other). When I'm home, I've been letting them out to wander the "pasture"/yard. (They really like this. They holler like crazy when they see me coming to let them out.) (And the yard is where they've had access to the kiddie pool, which they love splashing in, but no mating behavior yet.)
(The boys do love to wrestle in the pool.)
My intent is to keep the pairs penned once they start laying. Is this neccesary? Is it okay to continue letting them out until then?
Thanks for the help!