Wrasses are fish car washes. They hang about and clean fish going by. So it was interesting to see this one head into the gills of a passing goatfish.
Some days it is quite popular to get cleaned up.
It was intriguing to watch. The fish would pause long enough for the wrasse to work.
And then there might be a pause when the next fish arrived. Some fish are not so docile. I’ve seen the wrasse startle fish too.