The devil fish is scientifically called a manta ray.

The reason why they are called devil fish is that their swimming posture is somewhat similar to that of bats flying at night, and they are a collective name for several marine genera of fish in the order Chondrichthyes, family Mantaenidae. Manta rays are irregularly oval in size, with a body disk of 50 to 100 centimeters, up to 8 meters or more, and weighing up to 3 tons. They feed on planktonic crustaceans and small fish.

Manta rays have wide gill apertures, extended cusps in the middle, and a y curved girdle; oviparous, with papillae on the wall of the mother's uterus, which secrete nutrient fluids to nourish the fetus in the later stages of development. Fetal body disk width of about 0.41 meters, juvenile body disk width of about 1.44 meters. The body disc of the litter is about 1.13 meters wide.

Habitat:

Manta rays are a kind of cartilaginous fish that live on the bottom of tropical and subtropical seas, and are known locally as "underwater devils", but in fact, manta rays are 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 fin curls outward from below into an angular shape toward the front; it sometimes swims 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.