Question

Which one of the following is the exotic carp species?
a. Barbus stigma
b. Cyprinus carpio
c. Labeo bata
d. Cirrhinus mrigala

Answer 1

Hint: Exotic carps are those species that are non-indigenous having their birthplace in another nation and have been brought into the Indian waters. They by and large have set up culture innovations and the financial matters of creation and attractiveness.

Complete answer:
Labeo rohita, otherwise called Rohu, is the most significant among the three Indian significant carp species utilized in carp polyculture frameworks. This elegant Indo-Gangetic riverine species is the regular occupant of the riverine arrangement of northern and focal India, and the waterways of Pakistan, Bangladesh and Myanmar.

The normal carp or European carp (Cyprinus carpio) is a broad freshwater fish of eutrophic waters in lakes and huge waterways in Europe and Asia.[2][3] The local wild populaces are viewed as powerless against annihilation by the International Union for Conservation of Nature (IUCN),[1] yet the species has additionally been tamed and presented (see hydroponics) into conditions around the world, and is regularly viewed as a dangerous invasive species,[2] being remembered for the rundown of the world's 100 most exceedingly awful intrusive species. It gives its name to the carp family, Cyprinidae.

Labeo bata is a fish in the Labeo variety. It is regularly known as bata, and is a local fish to India and Bangladesh. It is a famous game fish and is mainstream for its taste. Its most extreme length is 25–35 centimeters (9.8–13.8 in). It eats protozoa, green growth, and small fishes. It is a sluggish fish, so with any dynamic and forceful it will be anxious.

Cirrhinus mrigala is a type of ray finned fish having a place with the class Cirrhinus, found in northern India, Pakistan, Bangladesh, and Nepal.

Hence, the correct answer is option (B).

Note: In India, the significant carps, (catla), Rohu (Labeo rohita) and Mrigal (Cirrhinus mrigala) are the backbone of freshwater hydroponics. The significant carps are the most favored homestead fishes due to their quick development and higher agreeableness to purchasers.