Pickerel

I had snagged a lure on a dock post and as I was drifting in to retrieve it I spotted this baby pike. It stayed so motionless that I debated it was just a piece of plant root or something. I saw it's dorsal fin moving and I grabbed my camera and stuck my hand underwater and TRIED to got some good shots. These were the best I got. The odd thing is this: it moved for a few minutes into the weeds and when it came out of the weeds it definitely looks much lighter than before like it was changing color like a cameleon camoflages. I am trying to find some facts on this but haven't come up with anything yet.