Thanks, Brian. The fish in the last picture is actually a fish I thought was female until a month ago. The fish stayed small, relatively drab and hung around the other 2 females. Just recently, the fish start growing more and is now showing the bright orange of the other males. So now, it appears I have 3 males, 2 females. The same fish is the one on the top in this picture (taken a few months ago):
Sal, these fish are in a 46 gallon tank. I was very hesitant about the number of fish I purchased because of the small size of the tank. But after talking with Brian before purchasing, he explained to me the reasoning behind 'crowding' the fish so that there is no room for establishing and defending territories, and/or allowing one aggressive fish to kill off one or two others. At first I was worried, and I tend to understock tanks, but now I am a believer in this method of stocking aggressive sunfish.
As mentioned, the tank is shared with a small warmouth and a large bluehead chub (so the tank is quite full). I have a 75 gallon in storage I am itching to set up. So hopefully as the fish grow, I will only have the 5 dollars in the 46, and move the warmouth and chub to the 75 along with some others.