A cute game love the art and the mechanics are unique, I admit I don't play a lot of platformers but I have not seen something like this done before with the water and the fish.
I feel like not being able to move while in air is frustrating sometimes, maybe I don't have the mechanics down but sometimes the fish just goes straight into the air when I thought I was pointing it in the correct direction.

Very good game, it was definitely a challenge, but I found a bug, almost at the end of the game there is a part were you have to jump to the other side, and you need to be very precise, but when you fail and you fell to the bottom there is a chance that you trespass the floor and go to the final zone without doing the other parkour.