Based purely on ear tab coloration PS and RES could easily hybridize. Coloration and color pattern is one key feature that fish use to recognize a mate. However natural crossing of these two species may have some reproductive behavioral differences that prevent hybridizing. Some experimentation will provide more answers. A hybrid RESXPS would be an interesting fish a good snail eater with possibly more tolerance to northern winters.
Last edited by Bill Cody; 06/19/15 10:48 AM.
