Pretty fun game. I love the music and the art. The glide physics do feel quite weird, though, since I keep expecting to have a normal jump arc. Maybe hold space + arrows to glide, and have a normal jump arc otherwise?
It'd also be nice to have a proper ending screen after you give the fish his tools back, since it feels weird that you can just keep playing after the end.
Overall, it's a pretty good game, definitely wished it was a lot longer though.