The most commonly cultured fish species in Telangana is:

Catla
Rohu
Mrigal
Common Carp

The correct answer is: B) Rohu

Rohu is a freshwater fish of the carp family Cyprinidae. It is native to the Indian subcontinent and is widely distributed in rivers, lakes, and ponds. Rohu is a popular food fish and is also used in aquaculture. It is a fast-growing fish and can reach a length of up to 1 meter and a weight of up to 20 kilograms. Rohu is a herbivore and feeds on algae, plankton, and aquatic plants. It is a schooling fish and is often found in large groups.

Catla is another popular food fish that is native to the Indian subcontinent. It is a member of the carp family Cyprinidae and is closely related to rohu. Catla is a larger fish than rohu and can reach a length of up to 2 meters and a weight of up to 50 kilograms. Catla is a herbivore and feeds on algae, plankton, and aquatic plants. It is a schooling fish and is often found in large groups.

Mrigal is a small freshwater fish that is native to the Indian subcontinent. It is a member of the carp family Cyprinidae and is closely related to rohu and catla. Mrigal is a herbivore and feeds on algae, plankton, and aquatic plants. It is a schooling fish and is often found in small groups.

Common carp is a freshwater fish that is native to Europe and Asia. It is a member of the carp family Cyprinidae and is the most widely distributed freshwater fish in the world. Common carp is a herbivore and feeds on algae, plankton, and aquatic plants. It is a schooling fish and is often found in large groups.

In Telangana, rohu is the most commonly cultured fish species. It is a popular food fish and is also used in aquaculture. Rohu is a fast-growing fish and can reach a length of up to 1 meter and a weight of up to 20 kilograms. Rohu is a herbivore and feeds on algae, plankton, and aquatic plants. It is a schooling fish and is often found in large groups.