Made it to round 12 before I stopped, fun game, I like the fish fight auto battler premise it was fun to progress and level up my fish. One critique would be to add some visual cues to match the upgraded stats, for example if the player upgrades their attack speed to a certain level maybe their player sprite is shown having an extra fin on top now. Balancing could use a bit of tweaking too as some fights are wayy too easy but the concept is really solid. The tranquil nature vs fight for survival aspect of fishing is a really neat application of the theme. Good job!