It was fun, not very original, but it was fun.
I did not like that the mouse movement made things difficult. The levels seemed very easy, though. Levels one through seven were a breeze, but then it started to lose me. I can appreciate a good Ecosystem game like this.
A good survival game.
Normally, games of this genre don't tend to deliver anything else than a eating frenzy, which only have one level, which is basically a battle for survival. You took it a step further and added stage hazards of all sorts, combined with lots of levels make this a worthwhile game. The music fits in nicely, the fish AI is very good indeed and adds some general challenge throughout the game. Overall, a nice game, though a bit too simple to be ranked at a ten.