Video S2 from Comparative behavioural observations demonstrate the ‘cleaner’ shrimp Periclimenes yucatanicus engages in true symbiotic cleaning interactions

Example video of a Periclimenes yucatanicus cleaning interaction in Curacao, Netherlands Antilles. Here P. yucatanicus can be seen cleaning a Blue Tang (Acanthurus coeruleus). Multiple flinches by the client indicates cheating by P. yucatanicus, and is met by no aggressive or retaliatory response by A. coeruleus.