Click to scare fish! Space to attract fish! H to hide options. World scale DOES modify the scale of all the parameters, even though they stay in the same place. I would recommend using turbowarp if you want to spawn more fish.
I decided to make a boids simulation based roughly on what I remember about the concept. It isn't as good as a classic simulation, (all the fish try to do is follow the direction of the other fish) but it kind of works.
