Good game, but some problems.
I feel like there is an inherent unfairness in the random fish spawns. I know I could have beaten the game if I had just kept trying, but it's frustrating to lose a game repeatedly for nothing but dumb luck.
Also, I suspect that you simplified the fish to rectangles, because there a fair few times that I died without touching any fish.
Fun though. I cheated through it once, and the ending was pretty humorous.