Video S1: Robofish and live guppy in test arena from Using a robotic fish to investigate individual differences in social responsiveness in the guppy.

The video shows an example of the Robofish test performed in experiment 2. Robofish was positioned close to the opening at the outside of the cylinder so that the live fish could not see the Robot from the inside but could not miss it once it left the cylinder. Once the focal fish has left the cylinder, Robofish started swimming in a natural stop-and-go pattern along a zigzag path to the opposite corner. After reaching this corner, the Robofish randomly swam to either the bottom left or the top right and was removed immediately after reaching the corner.