Theo I didn't look at the other side. I will return to the pond and catch this fish again. I think I remember where I let him go....
Bruce, the dark coloration struck me too. This pond had a constant flow from 2 springs that supply water at a time when 99% of them have dried up. The visibility might be 5 or 6 feet. Most of the species I catch there are very light in color.
That CNBG really hit and fought hard for such a little fellow.
Edit: I'm pretty that there's been no feeding program in this 12 year old pond.