'Myxine’ not a true fish because of A. Presence of gills B. Presence of notochord C. Absence of operculum on Gill aperture D. Absence of paired fins and true jaws
Option D. Myxine is a genus of hagfish, which are eel-shaped, slime-producing marine fish. Petromyzon is a parasitic lamprey found in the northern Atlantic ocean along shores of Antartica and North America, in the western Mediterranean sea and in the shores of the Great lakes. It is brown, gray, or black on its back and white or gray on the underside and can grow up to 90 cm long. These animals are the only living representatives of ancient creatures. They also lack jaws.
