Could be better.
Fish have an animation when they swim, there is definately nothing wrong with the game part of this, but the entertainment factor and the animation has to come into it. Spend some time on the graphics, making the fish actually swim and what not. Plus, do not say it gets better as it goes along, that is no excuse for a bad level or game. I did not play past the first level, because I ran into that fish, died, and then was too bored with it to try again. If the level is boring, get rid of it, or make it interesting. I should have played more of it to properly rate the game, but the truth is, I could not be bothered, and I'm sure neither will many other people.