What about the current situation in lake Havasu, and those giant RES? The "old" world record was set in 2011 with a 5.5 lb fish, now we see this 5.8 lb specimen that might claim the title....both from the same BOW?
In addition, there have been quite a few 4-5 lb RES pulled from this lake in the last few years. Sure, there are the Quagga's, but are there other factors in play here also?