My best guess is in the farther areas of the south such as AL you will get larger individuals if you use the CNBG because this "species" is most well adapted for warm climates and longer growing seasons. Pure strain BG are IMO more inclined to begin to slow their growth when the water gets above 80F, likely less true with CNBG who evolved and survive well in really warm summer temps above 80F to 90'sF.
If the water in your newer pond with the CNBG is more turbid and less clear than the other pond then this is the reason those fish are not as dark as the other sunfishes you have in another pond. Water clarity has a big influence on color intensity of fishes.
Last edited by Bill Cody; 01/29/18 12:17 PM.
