Yes, I assumed they'd cross-breed. I was more curious about the color of any cross-bred fry and genetics are something I know very little about. I had mental s of orangey-red fry, but was sure it would be more complicated. Thanks for your response!DutchAquarium said:Firstly, these fish are able to breed with each other because they are from the same species Xiphophorus maculatus or the Southern Platy. The fry are most likely going to contain gold and red in them or may just carry the gene. I wouldn't be surprised if red is more of a dominat color in platys also.
I think I'm going to try it. It could be interesting to see the results. I've had platys before, but usually kept the strains separate.DutchAquarium said:Most likely you won't get orange fry, but rather a red tail and a yellow body. Something along those lines. However, in other fish, red can be a very dominant color. I don't know h0w it would affect a platy though.