Abstract
Illex illecebrosus squid appear to have a species‐typical and internally organized spatial arrangement of their groups. Squid maintained an average angle of 25° with respect to their nearest neighbour, and mostly had angular deviations between 5° and 20°. They maintained distances to nearest, second and third neighbours in a ratio of 1:1.5:2. The distances were strongly affected by group size (4, 20, or 38), with larger groups maintaining closer distances. Interindividual distances were not affected by two variables, day‐night and presence of a current in the large pool in which they were kept. The similarity of this organization to that of fish schools is discussed.
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