I once had an orange spotted rabbitfish attached to my stringer that wouldn't stop convulsing after death. may or may not have attracted a nice trevally for my next shot! Not as big as in the video, but enough to feed our boat!
This was in a remote part of Indo, btw. For the most part, I tried to be informed on what was good/ethical to shoot, but our captain basically said "shoot literally anything, I don't care what it is". Aside from the nice, meaty fish that would be obvious good eats, we also picked off a couple reef fish that were super abundant in the area. It was super odd coming back to the states and seeing last weeks lunch(clown tang + rabbitfish) being sold for $300 at an LFS lol