Social approach and social maintenance behaviors are modulated by the salience of the social cue. A, Social approach behavior (normalized white zone preference and interaction zone latency) with TU (same as test fish), Casper, or TL fish as the social cue. B, Social maintenance behavior (normalized time in the interaction zone and interaction count) with different strains as conspecifics. C, Social approach behavior with zero, one, or five fish as the social cue. D, Social maintenance behavior with different numbers of fish as the social cue. E, The distance to the nearest fish is measured between the test fish and the nearest fish on the L-R axis that is within the 1-cm proximity zone (gray vertical dashed line). The distance to the nearest fish is plotted in histograms for when the test fish is in the interaction zone and when it is not in the interaction zone. F, The distance to the nearest fish on the L-R axis plotted in a histogram for when the test fish is not in the interaction zone. Error bars denote the mean ± 1 standard deviation (SD); significant post hoc comparisons, ns P > 0.05; *P < 0.05, **P < 0.01; ***P < 0.001. Abbreviations: TU, Tübingen; TL, Tupfel Long-fin.
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