After 5 days I put the Showa male and female back into my main pond, confused as to why nothing happened.

I then yesterday afternoon put my prize winning Tancho Sanke female into the pond and a few hours later a beautiful Kohaku male. This morning at 06h30 am they started their spawning and are still busy at it right now (11h30am)

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My question is now - can I expect sanke or kohaku to come out? Which of the two should I cull for?