Hey, thanks for trying the game out and sharing your thoughts. This is my first game developed outside of a tutorial, so having people engage with it means a lot. The screen size thing is something I should have handled in the code but didn't - I have configured the window size to be a fixed 1024x768, and depending on your device, this can cause issues. I'm working on a couple of things for the next iteration - such as fish behavior types, level and fish builders, and newer levels. I will add this very important change into it as well.
Also, sorry for the late reply - spent the weekend playing Silksong and trying to beat the boss 'Widow' in it, succeeded finally!