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. 2018 Feb 5;5:3. doi: 10.3389/frobt.2018.00003

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Copyright © 2018 Bierbach, Lukas, Bergmann, Elsner, Höhne, Weber, Weimar, Arias-Rodriguez, Mönck, Nguyen, Romanczuk, Landgraf and Krause.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Social behavior of surface and cave-dwelling mollies tested with live conspecifics and RoboFish in light (A) and darkness (B). Shown are median interindividual distances along with the results of U-tests (P values above bars) comparing cave- and surface-dwelling mollies in each treatment. Gray bars represent median and range of simulated interindividual distances for each treatment, and asterisks indicate a significant difference between simulated and real data in Wilcoxon’s rank tests (P < 0.05).