I took this first shot on Dale Hollow Lake while on vacation. Right after this snapshot I placed my cursor on the school and went over and caught a dozen nice ~10" bluegills and one 6# catfish.
Name: Bluegill.jpg Views: 561 Size: 51.6 KB

This second screenshot is from a lake near my home in Ohio. From this location I caught around ten ~ 10-12" crappies.
Name: Crappie.jpg Views: 681 Size: 46.5 KB

What I can't figure out is that in the Bluegill image the fish "dots" appear much bigger to me than in the Crappie image but the actual size of the fish is very close. Why would that be? The only thing I can figure is that in the Bluegill image the school is so tightly packed that each "dot" actually is representing several fish...? Any ideas?

BTW I really like the Sonar Quiz Thread. Have really learned a lot from that thread!