I liked the general gameplay. This was the first game I've played for this project where the player is stuck on one side of the screen. I did run into the issue where the entire screen would scroll down when I tried to move the blue fish down. This could just be an issue with either the browser or my computer's settings, however. Aside from that, I noticed that the player sprite flashes every time it's moved. This could be an issue with redrawing your canvas!