I love it!! A cute mouse fishing in a gorgeous environment, and it's in 3D! What more can one ask for? :D
It took me a little while to understand the controls (e.g. that I can't move the boat while fishing - obvious, but it still took me some good 20 s to understand that :p), and also to understand what to do exactly to trigger the fish catching mechanism (the in-game instructions were really helpful, but I wasn't sure what to do to get the gauges show up at first).
I hope you continue working on it after the jam, it's a very good example of a 3D game made with Godot, and we don't have many of those so far :)