the world > animals > fish > class Osteichthyes or Teleostomi > subclass Actinopterygii > subdivision Teleostei > [noun] > order Notocanthiformes > member of family Halosauridae (3)
a member of the family Halosauridæ, which includes both fossil and living fishes.
A deep-water marine fish of the genus so called, characterized by an elongated body and long tapering tail.