Figure 2
From: Do cleaning organisms reduce the stress response of client reef fish?
Variation (median and upper and lower quartile values) of cortisol responses to restraining stress in anthias individuals with and without access to cleaner wrasses. 2a: matched pair design, 14 individuals measured twice, once with access to a cleaner wrasse, once without access to a cleaner wrasse. 2b) independent samples of individuals living at the same reef patch, first group caught while a cleaner wrasse was present, second group caught 14 days after cleaner fish removal.