[Skybird]

As I understand it, Leturm, the point is that fish swarms behave differently in movement and finding a common movement direction than a heard of cattle or a pack of wolves, or another land based animal. It also appears that at times the swarm makes a decision by itself how to behave/move/where to go, unaffected by the intentions of leaders. In the third experiment, where two factions of different strength/different number of leaders were formed, the leaders of both camps were not able to control the behaviour of their "swarms". Something collective happened instead, and took over control of how the swarm moved and behaved - the system started to fluctuate, instead of both groups just pressing to keep or even just find a common direction.