Oh, I'm really glad that you could play my game! And yea, it lacks balancing since I'm someone who is used to the pace of games like UT, Taiko, MGR or Touhou and even then I sometimes find them slow. And imagine that in an earlier dev build the fish were even faster, spawned off screen and it reached the player in less than a second.
Anyways, thank you for your comment and I'm happy that you liked my game! :D