Compositionally, I really like this shot. I am a sucker for negative space, and I like how everything is on one side of the frame. You can almost feel the fish breaking for the open water there.
Technically, it has the feeling of an underexposed shot that was corrected in pp thereby leaving it with some edginess or graininess. At first glance, I didn't like that. This, I think, is a shot that would have to grow on you, because the more I look at it, the more I think it would work.
It has that "advant-garde" feeling that says, "I wouldn't put it on my wall, but I might put it in a fine art magazine."