Hedgehog fish

The blackfish has a red-brown scale color, on which numerous small,round,black o brown spots are scattered . Its length ranges from 40 to 70 centimeters . From above ,the scales of this fish are covered with bony shields ,each equipped with a strong ,movable needle.To protect against enemies,the fish is equipped with two (rarely three)fixed needles-spikes located on the upper and lower side of the tail. The length of each spike can reach 5 centimeters.