Butterflyfish and coral abundance
We used 50 m belt transects to quantify butterflyfish abundance within
each transect, and scored the cover of hard corals (Scleractinia) every
0.5m along the transect tape, across 2 depths (1 and 5 m) each year
(n=81). Fish and coral surveys were conducted along the same transect,
with the fish surveyor passing first to reduce disturbance to the fish.
We recorded the feeding guild of each butterflyfish species, based on
those listed in [16, Supporting information].