Lots of folks around the Midwest refer to various sunfish family members as "perch", which many us know is not quite correct. Of course what we refer to as "bass" are not true bass either, they are members of the sunfish family along with bluegill, longears, crappie etc. Perch family includes walleye and yellow perch. We all pretty much know what is being talked about when someone talks abut perch, except fir the occasional yankee. Now having grown up catching tons of bluegill and "black perch" green sunfish I often still call them perch, of course I often call walleye "jack salmon" too, why? Well why not, referring to them that way brings back memories of fishing with my father in the "old days".