Here is another video from the reef rescuers on Praslin. They say:
“During our mid-water coral nursery monitoring, we have a little help from fishy cleaners.
In this video, a school of Forktail Rabbitfish (Siganus argenteus) is busy at work eating the algae that compete with our nursery corals, providing a helping hand (or mouth) in our daily cleaning maintenance. Due to the location of the GoPro camera, you can almost feel you are a rabbitfish in the school. A parrotfish gets too close to the camera for identification, but it seems an Eclipse Parrotfish (Scarus russelii). Towards the end, the boat engine scares away the school.”