Had a bit of a tough time with this one, but I can see what you're going for and I like the character and theming you've put into the world! I think the main thing you could use is some clarity throughout the game. I spent a while thinking the green bar ping-ponging was a bug and it frustrated me. It wasn't until I checked the comments that I realized that was intentional.
It was also unclear what the ultimate goal of the game was. regardless of how many fish I caught I seemed to get a "game over" screen that implied I lost. The instructions page just said to catch as many as possible. If the goal is a high score, then I would expect it to show the score somewhere during the game or at the end, but I don't see that. I think clarifying the goal so that the player knows how to win would go a long way. I think if you can clear up exactly what's happening and why it would go a long way to boosting the enjoyment of the game.
You all should be proud of your submission, this is a fantastic start in the jamming world and I hope you continue to jam with us! Thanks for making this :)