Some wife-swapping going on...lol!
I have 2 pair of erectus in my seahorse tank, and a nursery tank with some 9 week old fry and some Pixies (or dwarf seahorses). My erectus are named:
Zack and Zoe and
Jack and Chloe
Well, it was Jack and Chloe that were the parents of my current brood of fry. Jack is totally in the "mood" this morning and the only female that will pay any attention to him is Zoe. So that makes Zack jealous, so he's rubbing up to Chloe, who is completely not interested.... which is why Jack is looking elsewhere in the first place.. :roll:
But if they keep it up, J and Z will have a successful egg exchange anytime, and I can expect another tank full of fry! Woohoo! My largest Pixie was also poofing his pouch the other day, so you never know.....