 The pectoral and ventral fins are so articulated as to perform the functions of feet, the fish being enabled to walk on the bottom of the sea, where it generally hides itself in the sand or amongst seaweed.All around its head and also along the body, the skin bears fringed appendages resembling short fronds of seaweed.These structures, combined with the ability to change the colour of the body to match its surroundings, assists the fish greatly in concealing itself in its lurking places, which are selected for their abundance of prey.