Fishes can produce no voice, for they have no lungs, nor windpipe and pharynx; but they emit certain sounds and squeaks, which is what is called their 'voice', as the gurnard, and the sciaena (for these fishes make a grunting kind of noise) and the caprus in the river Achelous, and the chalcis and the cuckoo fish; for the chalcis makes a sort of piping sound, and the cuckoo fish makes a sound greatly like the cry of the cuckoo, and is named from the circumstance.