Fish Choose Their Leaders By Consensus
Small groups of sticklebacks (Gasterosteus aculeatus) reach consensus when choosing which of two replica fish to follow. As group size increases, the fish make more accurate decisions.
"It turned out that stickleback fish preferred to follow larger over smaller leaders," said Ashley Ward of Sydney University
"Not only that, but they also preferred fat over thin, healthy over ill, and so on. The part that really caught our eye was that these preferences grew as the group size increased, through some kind of positive social feedback mechanism."
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