“Any fin” is possible with this Advanced Flock System for creating realistic simulations of fish shoals. Perfect for undersea environments, aquariums, or any other subaqueous scene, the fish in the simulation react to objects, pawns, and characters. You can have up to 5,000 fish instances running at 120 fps, or up to 20,000 running at 50-60 fps (based on AMD Ryzen 5 2700X speeds). And you can even bring in your own fish meshes to use with the system.