Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Fish Flock Free.
Fish Flock v1.24
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Fish Flock is an easy-to-use asset that manage a shoal of fish. The fishes move in flock and keep themselves as a group and also avoiding to collide with each other as they swim.
Notes:
– The asset only supports Unity’s built-in renderer currently, it doesn’t support any of the new rendering pipelines.
– For MacOS users, the asset will need to use the Metal renderer to use Compute Shaders otherwise you can’t use the GPU computation mode.
Features:
– Follow random generated points or a specific target.
– Instancing or prefab instantiation for the fishes
– Process the fishes through a Compute Shader (GPU) or in the CPU – Collision Avoidance against unity built-in colliders.
– Acceleration, speed, force, turn speed, transform scale and neighbour distance customization through inspector.
– Includes one simple shader that simulates the swimming movement of a fish.
– Multiple flocking groups on a scene.