1, family difference: rays belong to the order of ray-finned fishes, while devil fishes belong to the order of swallows.

2. Difference in fins: in terms of appearance, there are also differences between rays and devil fish. Rays have a large caudal fin and a dorsal fin; devil fish do not have these two kinds of fins, they have a cephalic fin and a kissing fin, and the cephalic fin is shaped like the two wings of a bat.

3, body size difference: the biggest difference is is the head, the devil fish is the largest species of rays, skates are far less than the devil fish. Big rays can be up to 2.5 meters long, while the largest devilfish is more than 7 meters.?

Devilfish

Rays

Expanded profile:

Manta rays use their large, characteristic fins to slowly vibrate as if they were spreading their wings, and swim lazily beneath the surface of the sea, sometimes jumping out of the water (sometimes it's a pleasure to watch them "fly"), sometimes somersaulting through the air, a fascinating sight to behold. Manta rays are the largest of the family of manta rays, with a body length of up to 8 meters and a weight of up to 3 tons. The body is flattened, with powerful pectoral fins, similar to wings, cruising in the ocean, two thin, narrow, ear-like protrusions in front of the pectoral fins, which can collect food into the mouth, and tiny teeth. Although all the animals in the family of Manta Rays are big guys, they mainly feed on plankton and small fish, and they often cruise around coral reefs looking for food, and have a gentle temperament. In English, they are wrongly referred to as "devil fish", mainly because of their intimidating shapes.

Sometimes manta rays use their cephalic fins to hang themselves from the anchor chain of a boat, dragging the boat around the sea so fast that fishermen mistake it for the devil, but it's actually a manta ray's prank. "Devil fish" like to swim in groups, sometimes submerged at the bottom of the sea, sometimes male and female pairs rise to the surface. In the breeding season, manta rays sometimes use both fins to beat the water surface, jumping up in the air, can jump out of the water, in the water away from a person high above the "glide", when the water, the sound is like a cannon, the waves for miles, very spectacular.

Manta rays look intimidating, but in fact it is very gentle, only to crustaceans or groups of small fish and shrimp for food. The two fleshy feet on its head are its cephalic fins, which protrude forward in a flipped-up position and are free to rotate, and it's these cephalic fins that manta rays use to drive away food and flick it into their mouths to devour it.

Baidu Encyclopedia - Devilfish