If that was my sounder I would say the stuff on the bottom was bass ( yes, unfortunately I get lots of bass in deep water ) and the mid water stuff was some kind of undesirable, sunfish of something. I don't ever see huge schools of trout like that. Trout usually come by in 1's and 2's not by the 4 dozen.
But, it is not my sounder so I certainly could be mistaken.
But, it is not my sounder so I certainly could be mistaken.