The devil fish is also known as a manta ray.
The Devilfish is a powerful fish that is usually very mixed, but once it gets angry it can explode into an amazing killing power. The Devilfish's teeth are very hard and have a strong bite, so it can easily crush hard objects, but the good thing is that it hardly ever bites people. But if someone messes with it, it will have those powerful wings to slap each other, just one time will break people's bones, or even directly to death, so divers are very afraid of this kind of fish.
But the devilfish is mostly gentle, and sometimes does a little mischief. For example, using its cephalic fins to hang itself from the anchor chain of a small boat, dragging it around the surface at great speed. Many fishermen think this is power from the devil, but in fact it's just the devil fish playing around.
Devil fish habits
Manta rays are a kind of cartilaginous fish that live on the bottom of tropical and subtropical seas, and are known as "underwater devils" by the locals, but in fact, manta rays are a kind of very gentle animals. They feed mainly on plankton and small fish, often cruising around coral reefs.
Slowly flapping its large wings, the manta swims lazily through the sea, using its front fins and fleshy horns to flick plankton and other tiny creatures into its large mouth. When swimming, the cephalic fins curl outward from below into an angular shape toward the front; sometimes they swim in groups, with males and females often traveling together. Feeds primarily on planktonic crustaceans, and secondarily on schools of small fish. Gill rakers more keratinized, a series of feathery sieve plate, play a role in filtering water to retain food.
Refer to Baidu Encyclopedia - Manta Rays