Cool idea, but I would like it better if it was cropped to only show the very opening of the bottle, I don't like knowing it is a plastic water bottle. Although I'm not sure what the alternative bottle may be made of, but the bottle is somewhat distracting to me.
I like how the fish has the only colour in the photo - it works well. There's some nice subtle tones in the background too. There's a little detail lost in the bottle - maybe a tad out of focus.
Cute shot. Something the voters have seen quite a bit lately though, at least it stands out in my mind as becoming pretty common idea. Lighting is a little bright.
Nicely presented, if a bit lifeless for my sensibilities; the water is completely frozen, the fish is slumping, there's no sense of stop-ACTION at all. This isn't a flaw, exactly, but the whole image seems technically excellent and emotionally void to me, it's not really grabbing em at all. The fish looks distinctly bummed out, which kind of undercuts the idea of purity in a strange way; were he being more active, the image would work better for me.