Have you ever noticed that several Big Bluegill waters have populations of Bowfin too. The Bowfin may not appear beautiful in appearance but they have a unique role in helping produce trophy Bluegills.
My theory is that Bowfin eat smaller bluegills. Their mouth is not big enough to eat Big Bluegills. Northerns, on the other hand, will eat all sizes. These small Gills need to be culled out in order to provide increased forage for bigger Gills. If the predator/prey ratio is down then the “stunting effect” happens; too many panfish competing for food. So the next time you catch a big Dogfish, let him go so that that natural balance continues. This is just my opinion. Anybody else have any ideas about this?