On a recent trip to Bonaire I was lucky enough to catch a sailfin blenny doing some dramatic displays. As I waited I would take glances over at a spotted snake eel, whose head stuck out of the sand. More than once I saw a Spanish Hogfish swim in a very tight circle around the eel's head, brushing against the eel. I took a few snaps. As the pictures show, the fish was stirring up some sand as it made its passes. Has anyone seen that before, and if this happens regularly, does anyone know why it happens? Sorry if this is out of place here -- I don't know of a better forum, but would be happy to learn of one.
This is very interesting because I have never seen this behavior in a wrasse. The behavior is called 'mobbing' and was first described in birds in cases where small maneuverable birds mob a potential predator (e.g. a hawk or cat) to draw attention to its presence and/or harass it. Its fairly well known that damselfishes do this to scorpionfishes, groupers, eels or other predators.