Fish Evolution is a fascinating puzzle game where you can merge and upgrade your fish. Create the ultimate underwater creature! Step into this casual and colorful adventure to see how your fish develop into extraordinary sea creatures. Merging the same type of fish creates a more advanced species. Each level offers unique challenges and opportunities to further evolve the fish. Keep eating food from the ocean to strengthen yourself and eat fish that are lower than you. This can create more mysterious sea creatures. You can also collect defensive items to prevent yourself from being eaten by big fish. Switch to Merge Aquarium mode, and position your fish and shells to fight the fish on the opposite side of the area strategically. Come start your adventure in fish evolution!