I have noticed when feeding my fish that some of the Bream have vertical stripes like a Tiger and these Bream overall are darker than the obvious other Bluegill that are in the pond. Could it be that I happened to get some Coppernose Bream mixed in when I ordered my Bluegills?

If these are indeed Coppernose will they interbreed with the regular Bluegills and if so which species would be the result? Thanks in advance for any information. Robert Lewis.