Puffer Fish devs unite!
I played around a little, and was about to quit, until I realized I could go deeper. I proceeded to spend the next hour or so farming the abyss. It gets addicting to constantly improve the pufferfish. I am proud to say I got every single upgrade by the end, and went on to collect 80+ scales more before letting myself get eaten. Aside from the collision with the red fish being finnicky, the game works well. The feeling of gradually becoming the king of the pond is addicting.