Juvenile fish
Juvenile fish need protection from predators. Juvenile species, as with small species in general, can achieve some safety in numbers by schooling together. Juvenile coastal fish are drawn to turbid shallow waters and to mangrove structures, where they have better protection from predators. As the fish grow, their foraging ability increases and their vulnerability to predators decreases, and they tend to shift from mangroves to mudflats. In the open sea juvenile species often aggregate around floating objects such as jellyfish and "Sargassum " seaweed. This can significantly increase their survival rates.