Gurnards are very distinctive bottom-living fish with large heads and eyes. The head is protected by large bony plates and strong spines. The lower three rays of the pectoral fins are separate, finger-like processes that contain sensory organs. These are used by the gurnard to 'feel' for small fish, crustaceans and other invertebrates living in the sediment.[citation needed] The red gurnard has a stout body, large head and eyes and moderately large scales. Original public domain image from Flickr