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Dynamical states of schooling fish.

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posted on 01.03.2013, 12:01 by Kolbjørn Tunstrøm, Yael Katz, Christos C. Ioannou, Cristián Huepe, Matthew J. Lutz, Iain D. Couzin

(A) Snapshots of a group of 150 golden shiners swimming in a shallow tank. The different images (thresholded for clarity) demonstrate the typical configurations displayed by the fish school: swarm state (S), polarized state (P) and milling state (M). (B) Extracts of time series of order parameters for groups of 30, 70, 150, and 300 golden shiners. Polarization Op (in blue) measures how aligned the fish are, while rotation Or (in red) measures the degree of rotation around the center of mass of the fish shoal.

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