I think the opening post , with it,s link , though interesting does not show evolution in action, as has already been hinted at. true 2 yr is.nt much to go on , but albeit quite remarkable *adaption* is not the information gaining process required for fish to philosophers evolution. you did however claim [or link did] that their experiment was verified by fossil record.....but elucidation required to demonstrate the validity of that claim.
we do know that longer times can be extrapolated by using fast reproducing critters like flies, but again, best I can see, whatever adaption and natural selection may be observed, evolutionism is,nt being observed, ie flys is still flys.