'Electronic' fishing is rapidly becoming surest way to find fish

Waaay back 1977, the Lakeland Ledger (Lakeland, FL) printed up a story about the new-fangled technology of using electronic gizmos to find fish. In this case, sonar units:

Sonar units are essential to locating most of the concentration points for fish... if you intend to do it in less than a lifetime!

What does this have to do with Saginaw Forest, though? Well, the article closes with a citation of a study that looked at dispersal of bluegill released in Third Sister Lake:

This inclination [of bluegill] not to wander [that was proposed by an Indiana study] was confirmed in another study on Third Sister Lake in Michigan. Of 27 bluegills marked, released, and later caught 12 had not moved at all and 15 had traveled less than 125 feet from their point of capture. Bluegills are just homebodies, it seems.

I can't speak to the methodology of the study (such as how did they track the fish, how did they account for bathymetry, what was their time interval between release and recapture, was Third Sister Lake effectively cut off hydrologically (when the lake level is low, almost no water flows west through the wetlands and into the adjacent property's pond), etc), but it's interesting to note that people had been doing fish behavior observational studies on Third Sister Lake. Perhaps more can be done in the future.