I was at Preuss Pets in Michigan today (which is an amazing pet store) and they had some very interesting Koi hybrid's in-store.
As can be seen, these guys don't have the barbels of a Koi but have small pom pom's just beneath their eyes. Interestingly all the young hybrid's (there were 6-8 of them) have a uniform color. Apparently the lady had one Koi and one fancy goldfish in her pond.
The video is shot with my blackberry so not the clearest but gives you an idea;
http://www.youtube.com/watch?v=9H9KpGVJ_yoWill be interesting to see how they turn out.