Can different subspecies conceive of spring?

[Speedmark]

What's done is done but I would never house different sexed different species together. Nature finds a way to continue things on. No offense but I hope the mating didn't take and no hybrids are born.

I also hope no hybrids are born, but the question I had was CAN they be born?
Because when I bought them at the breeder, Steven Bol.
He said that the different species couldn't conceve offspring together.