Batoidea is a superorder of cartilaginous fishes containing more than 500 described species in thirteen familes. They are commonly known as rays, but that term is also used specifically for batoids in the order Rajiformes, the "true rays". Batoids include stingrays, skates, electric rays, guitarfishes and sawfishes.
學名batoidea
一般叫rays
圖片參考:
http://upload.wikimedia.org/wikipedia/commons/thumb/c/c5/Spotted_eagle_ray.jpg/250px-Spotted_eagle_ray.jpg
?Batoidea
Spotted eagle ray, Aetobatus narinari