Mixed Species Guppy Cross Breed?

[phantomlink]

At my LFS here, all they have are "fancy" guppies are they're pretty expensive. At a store out of town they have probably 10 different kinds of guppies all for a cheaper price since they are a chain of stores. What I was wondering was if these guppies will crossbreed at all or will they only mate with the same kind as their own? I might use some in my tank and would like to know what I can stock, or see if I can get some nice looking hybrids down the road

 

[OldMan47]

Guppies are all Poecilia reticulata and will not pay any attention to the line breeding that commercial breeders have done. The different lines of guppies at that out of town location just reflects color or tail shape choices made by breeders, not some separate species. It is like someone bred humans to be taller, as an example, they would all still be humans and not a distinct species. Furthermore, some of them would find the original population of the opposite sex quite attractive and would try to breed with them. Much the same will happen if you mix different color or shape variations of guppies. They are all still guppies.