I have been having problems with my ctpk project recently. The F2 male wouldn't have a good spawn. Eggs always fungus.
I might have to start from scratch again. Producing CTPK of my own would take longer. Sorry to keep you waiting.
I think I would do the same approach I did. I will use a DTPK and a CT
Here's my plan
F1a = DTPK (related to the CT female, sharing the same grandmother) x CT (F2 female)
F1b = "DTPK x ctpk-geno outcross" x CT (F2 female)
Sorry to keep you waiting...