Jeff, I have the same fishfinder - Garmin 250DF - great unit.
Unless you had the "fish ID" feature activated for a reason, I'd would suggest you turn it off. That way you will be able to tell what is a fish vs. a bait school vs. floating debri, etc. With the fish ID on, everything gets the little goldfish symbol. With it off the bait schools show up as dark clouds and fish are like Mickey D's arches.
Nice V by the way!!