On Bonaire visual surveys were conducted at 17 different sites between 7 and 16 March 2015. The selection of sites was largely based on the water quality study of Slijkerman et al. (2014), resulting in a selection of sites known to vary in water quality (e.g. City-Salt locations versus northern locations). Some sites were added to the ‘quick scan’ as a reference based on assumed good water quality (e.g. east coast with minimal human influence) or as additional sites potential eutrophic sites based on the presence of deep-water cyanobacterial mats. In total 16040 coral reef fish were visually inspected for the presence of dermal parasites.