anyone good with minnows, and fish disease?

[chong2]

Not a MD find, but this place has answers to all my questions I have had some minnows i got from a friend since they were about half a inch big, now they are 2-3in. 3 of the 4 have changed face shape and turned a darer color, and now the ones that changed all of a sudden have white spots on thier face, nowhere else on the body, just the front face, no other fish in the tank have this either, so i doubt its ICK. I have had them now for about 6 months. The first pic is one off the net i found which is what they have"pic had no info about it" the other pics are of my fish, sorry, its hard to get the detail.
Thanks!!!

 

[pronghorn]

Also, they are almost always confused with being minnows, but they are CREEK CHUB's.

DH24

Not that it matters but I have to disagree, the fish pictured above are fathead minnows

here is a comparison of fathead minnows and creek chubs, you make the call.

fathead minnow





creekchub