[James]

when u ppl keep mentioning about the repulsion between fish, I'm wondering what exactly of the collision algorithm used here, I was once working on a Internet remoted robot which must avoid collide in to obstacles, and the algorithm I used is called "Potential Field Algorithm" where the robot treats all obstacle as repulsive force and treats the target direction as attractive force so the robot will eventually reach the target place.

I wonder if the SSA fish use the same algorithm