aquatic vertebrate

n primitive jawless aquatic vertebrate: lampreys

primitive aquatic vertebrate

any of various mostly cold-blooded aquatic vertebrates usually having scales and breathing through gills n

n any of various mostly cold-blooded aquatic vertebrates usually having scales and breathing through gills n the flesh of fish used as food n (astrology) a person who is born while the sun is in Pisces n the twelfth sign of the zodiac