Hi,
I bought 2 males and 10 female Koi Swordtails and not one of the females has gotten pregnant. I separated 1 and bought a different coloured swordtail and put them in a separate tank and she is now pregnant. This means the males may be infertile.
Does anyone breed these swords so that I can get a fertile male?
Thanks,
KLT
I have bred guppies, mollies, platies and swords for years and I was never able to have koi sword babies
I outcrossed and have a few young ones and lots of Oregon females now. I am trying to keep bloodlines well marked and will line breed to try to re-introduce fertility in the males. They won't be 100% pure but the young ones I have all look like Koi except for one so they still add that beautiful splash of colour.
One lineage my focus is on consistently getting trident tails. I know it is a show fault, but I really like the look.