Fish [1]
Group:
Đăng ký vào nhóm [2]
Fish include any of a large group of cold-blooded aquatic vertebrates having jaws, gills, and usually fins and a skin covered in scales: includes the sharks and rays (class Chondrichthyes : cartilaginous fishes ) and the teleosts, lungfish, etc (class Osteichthyes : bony fishes ).