Table 2.

Results of analyses of variance of prevalence of retaliatory punishment (i.e. square root-transformed proportion of jolting clients that chased the cheating cleaner) by all clients combined, resident clients only and non-resident clients only. One fixed factor, cleaner age (juvenile, sub-adult, adult), and one random factor, cleanerfish species (L. dimidiatus and L. bicolor), and their interaction were estimated. d.f., degrees of freedom; F, test statistic; p, probability; significant values are in bold.

	prevalence of retaliation by all cheated clients			prevalence of retaliation by cheated resident clients			prevalence of retaliation by non-resident clients
	d.f.	F	p	d.f.	F	p	d.f.	F	p
cleaner species	1,79	7.32	0.09	1,67	18.13	0.01	1,42	0.03	0.88
cleaner age	2,79	2.19	0.31	2,67	0.08	0.93	2,42	1.09	0.48
cleaner species * cleaner age	2,79	0.22	0.80	2,67	0.09	0.91	2,42	2.69	0.08