The largest known fish shoal of herring formed. There were some fish species 3,000,000,000 turns out, the position of individuals within a shoal may vary depending on its fitness. As researchers found, the optimal placement of the strengths and weaknesses allows the fish around the jamb to develop more speed. Biologists have passed flocks of young fish through the tunnel. In this study the motion on the jamb of low, medium and high speed. The authors of the experiment recorded the position of individual fish and checked their physical parameters the standard and maximum metabolic rate and aerobic capacity.So let' see the amazing Huge shoals of fish here.