This is a grey triggerfish video.
Translated from the report by Dutch marine biologists of ANEMOON:
Sunday, September 2, 2012
The grey triggerfish occurs rarely in the Zeeland Delta in the Netherlands. In the summers of 2004-2007 year there were small numbers of these tropically looking fish in the Oosterschelde. Also in the North Sea then with some regularity triggerfish were observed. Then things became very quiet around this species. In recent weeks there are four different reports of the grey triggerfish in the central Oosterschelde waters. So, this means joy for recreational divers, because although ‘grey’ is often seen as boring, this is an especially beautiful fish!
The grey triggerfish (Balistes capriscus) is a high-bodied, laterally flattened ray-finned, species with a thick scaly skin. It may grow to 75 centimeter, nearly six kilogram and 13-years-old.