Least we miss the forest for the trees. In the broad sense there is no difference in what Theo describes and the evolution of Centrarchidae from the chart above. For every successful branch there were probably 100,000 maybe a million unsuccessful non-viable attempts. Each one takes a long , long time. Conceptually there is little difference (except speed of change) in mother nature making a change and man. From the fish's view either way they are subject to the pressure of change no matter if the source is man or nature.



Last edited by ewest; 03/21/08 08:42 AM.