Question

Devil Fish is
A. Loligo reynaudii
B. Manta birostris
C. Sepia mira
D. Nautilus cookanium

Answer 1

The devil fish or commonly known as the giant devil ray is a species of ray belonging to the family Mobulidae. Currently, it is listed as endangered, which is mostly due to bycatch mortality in unrelated fisheries. It is also known as the blanket fish, sea devil, giant manta, and giant devil ray. They are frequently seen in tropical and subtropical waters. They are regarded as one of the largest rays.

Complete step by step answer: The scientific name of the devil fish is called Manta birostris. The devil fish is larger than the lesser devil ray. It grows to a maximum length of $5.2$ meters that were recorded, thus making it the largest ray in its family. The devil fish has a spiny tail.
-The devil fish is the largest species in the genus Mobula. It is the only mobulid species that live in the Mediterranean Sea. The species has been observed to have a maximum disk width of $5.2$ meters. The species is also considered endangered given its decreasing population density.
-Devil fish are most common in the Mediterranean Sea and can be found elsewhere in the Eastern Atlantic Ocean, off the southwest coast of Ireland and south of Portugal, and possibly in the northwest Atlantic. The species has been recorded in a number of Mediterranean countries such as Croatia, Greece, Italy, and Turkey, which shows that the species has a basin-wide distribution.
-The average lifespan of a giant devil ray is $20$ years. It is an epipelagic species. It has a very low reproductive capacity. This means that the species gives birth to a single offspring at unknown intervals.
-The species is ovoviviparous, i.e., the young hatch from their eggs inside the mother's body and emerge later when they are more fully grown. Devil rays feed on planktonic crustaceans and small schooling fish, which are trapped using the modified gill covers responsible for its "devil-like" silhouette. It mostly eats euphausiid shrimp and small mesopelagic and clupeid fishes.
Hence, the correct option is B.

Note: The devil fish has a limited range and a low rate of reproduction. As a result, it is sensitive to environmental changes. Its population trend is decreasing. Most of the information on the giant devil ray has been gathered through bycatch data because the species has high bycatch mortality.