The crappie I stocked in my pond 2 years ago ended up being the black nose as well. they were only 2-3 inches when I stocked them so did not notice this color. But have since caught about 3 of them and they have all had the black stripe. I try to tag any and all Crappie I catch just so I know which ones are in there and once I get to the number I want I plan to keep all the others out just to see if the tagged ones do continue to grow ok. They sure are some neat looking fish, and I have never seen them before in any of the lakes we have around here.