As you may or may not know, I have 9 cories in my tank. I don't plan to add more, but I do have some concerns. The store I got them from only stated "assorted cories" as the name. So I know I have some bronze cories, but the rest are a mystery. I have a few questions: There are some cories with a darker strip/block along the side, what species are these? Can cories of different species interbreed? Will the cories be fine despite that fact that they are of different species? They all look relatively similar, and are about the same size.