Are these fishes I see on my sonar? 

What do the lines represent between 72 degree and 52 degree?

 

More pics

Hard to tell if its fish or something else but if I had to guess it's not fish. As far as the lines, I believe that you have your temperature graph setting turned on

Thanks for responding y'all.  This is the first time I've seen this kind of recording on my sonar.  I've used this sonar a few times only.    If it matters, it's setup on my kayak.  That's why the speed is less than 2 mph.