Gosline’s Fangblenny (Plagiotremus goslinei) size 10cm
The Gosline’s Fangblenny is a Hawaiian endemic fish. They imitate cleaner wrasses and clean other fish. They also like to take chunks out of other fish too. Looks similar to the Piano Fangblenny. Kauai 2020
Gosline’s Fangblennies also like to hide in worm snail tubes. Worm snail tubes are those little round tubes with a sharp point and edge that you don’t want to step on the reef. I am not sure what kind of hole this one is in, but it seems to like it. Kauai 2013