Ok... so I was on a night dive on Phi Phi Island a few months ago and there were a whole bunch of bannerfish around. I shone my light on one and he started swimming toward me. He kept jerking back and forth and making erratic swimming motions. Anyway, I guess he didn't like the light because eventually he bopped me with his beak 3 or 4 times until he chased me away. It didn't hurt but it did startle me. Strange thing for a little thing to do to such a big thing. Maybe I deserved it for shining my light in his eyes. Has anyone else experienced this kind of behaviour from a fish? Usually they just appear blinded for a few seconds if you shine your light on them.