Fish Collection Methods
A variety of methods and net types were used to collect fish while on
snorkel or SCUBA. All fish were caught between sunrise and approximately
11:00 h. This time block was selected to maximize the interface between
when diurnal fishes begin to feed and when gnathiids may still be
active. Details on sampling for each site can be found in supplementary
material (Table S1). We did not account for any effect of site because
all sites are similar in composition regarding biodiversity and benthic
composition, and all have been confirmed to have substantial gnathiid
populations (Artim et al. 2020).