All I know is... in 2004/2005 me and several friends were at bullshead a lot and Many, many, MANY fished taped at 24-26 inches, and some better. we stopped coutning the 21-22 inch fish. We were not overestimating fish sizes... as many got taped. After taping the first 3 21 inchers you know what your looking at when you have one. and there were LOTS that size and bigger, as a matter of fact I'd say over half the fish caught each day were above 20 inches easily. And the pictures of bullshead fish now--- guys they look THIN compared to the footballs of /04 and /05.
And now after a bunch of years of a LOT of fish getting put in, the widespread observations are that no one is catching truly large fish anymore (22-23-24-25+)
and yes, people were bonking everything in sight back then too... I'd see 15 fish / day leave the lake.... on a slow day. That's fine, the lake was created for two kinds of fisherman, we gotta accept that. But... fish the next year should have been able to get to the 22-25 inch range easily, but they are not?
What happened? There's SOOOO many fish in there.....
You don't have to be head cashier at Walmart to figure this one out