Fig. 6: Exploration strategy of zebrafish and paradise fish of late larval stage (30 dpf).

A Schematic drawing of the y-maze platform and a list of the possible exploratory actions. B Distribution of different exploratory actions in zebrafish (white) and paradise fish (orange). Asterisks on a solid, dashed or dotted line represent significant main effect of species, action type or significant interaction between these, respectively. Different letters represent significant post-hoc contrasts. C mean swimming velocity and alternation % of the two species. Asterisks represent significant species differences. Red dashed line represents 50% alterations, meaning random choice in the y-maze test.