AI Summary

A virtual‑reality system designed for fish showed that each individual focuses on only one “most influential” neighbour rather than the whole group. Researchers led by Guy Theraulaz at the University of Toulouse used the VR setup to observe interactions among five rummy‑nose tetra (Hemigrammus rhodostomus). The result suggests a mechanism by which schools can move cohesively without each fish being overwhelmed by the activity of all nearby members.

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