I love the creativity of implementing a game from literature! For the most part, this game works quite well. I'm only able to switch fish using arrow keys, but I can still move them with WASD. There was a glitch at some point or another where the highlighting was gone. I wasn't quite sure if the blurred was an intentional effect or a mishap in the scaling, but I peeked at the source and it was absolutely intentional so I must commend you. Great job!