Parrot fish are one of the most interesting creatures of the undersea
with their colourful appearance. The most important characteristic of these fish,
sometimes being as long as 1 meter, is their covering themselves with a jelly-like
substance at nights to protect themselves against external effects. This substance
camouflages the fish and protects it against its enemies which are active at night and
pose a threat for it.
A parrot fish in its jelly-like shield.