Question

Which one of the following is an exotic carp species?
A. Labeo rohita
B. Cyprinus carpio
C. Labeo bata
D. Cirrhinus mrigala

Answer 1

Hint: One of the exotic carp species commonly known as 'common carp' is Cyprinus carpio. It is an extensive freshwater fish of eutrophic water lakes and large rivers in Europe and Asia. Therefore, they are also called as European carp. It belongs to the family Cyprinidae. It is an exotic variety of carp that are bred and domesticated for ornamental purposes.

Complete answer: Option A- Labeo rohita
Labeo rohita, also known as Rohu. It is the most important among the three Indian major carp species used in carp polyculture systems. This is found in the natural inhabitant of the riverine system of northern and central India, and the rivers of Pakistan, Bangladesh, and Myanmar.

Option B- Cyprinus carpio
Cyprinus carp also are known as the common carp or European carp is an extensive freshwater fish of eutrophic waters. It is found in lakes and large rivers in Europe and Asia. The International Union for Conservation of Nature (IUCN), states that the native wild populations are considered vulnerable to extinction. Therefore, the species has also been domesticated and introduced into environments worldwide, and is considered a destructive invasive species. It is included in the list of the world's 100 worst invasive species. And gets its name to the carp family, Cyprinidae.

Option C- Labeo bata
Labeo bata is a fish belonging to the genus Labeo. It is also known as bata. It is a native fish to India and Bangladesh.

Option D- Cirrhinus mrigala
Cirrhinus mrigala is a species of ray-finned fish belonging to the genus Cirrhinus. It originates in northern India, Pakistan, Bangladesh, and Nepal.

So, the correct option is 'Option B'.- Cyprinus carpio.

Note: Common exotic carps known are Aristichthys Nobilis (Bighead carp), Hypophthalmichthys molitrix (Silver carp), Ctenopharyngodon idellus (Grass carp), Cyprinus carpio (Common carp), and Labeo rohita (Rohu). They are found in the subtropical lake. The impact of their introduction on native fishes was also studied.