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.
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A parrot fish in its jelly-like shield.