Fishes reared in culture fishery in India are

• A. Salmon and rohu
• B. Salmon and catla
• C. Catla and magur
• D. Rohu and catla

In the context of aquaculture in India, the most commonly reared fish species are typically those that are well-suited to the local environment and have significant cultural and economic importance. Among the options you've provided, the correct answer is D. Rohu and catla.

Understanding the Key Species

Let’s delve deeper into why rohu and catla are prominent in Indian aquaculture:

Rohu (Labeo rohita)

Rohu is a freshwater fish that is highly valued in Indian cuisine and is known for its palatability. It is a member of the carp family and is particularly favored for its growth rate and adaptability to various water conditions. Rohu is often reared in polyculture systems, where it is raised alongside other species, which helps in maximizing the use of available resources.

Catla (Catla catla)

Catla, another species of carp, is also extensively cultivated in India. It is recognized for its fast growth and high yield, making it a popular choice among fish farmers. Catla primarily feeds on plankton and is known for its surface feeding habits, which complement the feeding patterns of rohu and other bottom feeders in a polyculture setup.

Why Not the Other Options?

• Salmon: Salmon is not typically reared in Indian aquaculture due to its preference for cold water, which is not conducive to the Indian climate.
• Magur (Clarias batrachus): While magur is indeed cultivated in India, it is not as dominant as rohu and catla in terms of overall production and cultural significance.

The Importance of Polyculture

Polyculture, the practice of raising multiple species together, is a common strategy in Indian aquaculture. By combining species like rohu and catla, farmers can optimize feed utilization and improve overall fish health. This method not only enhances productivity but also contributes to biodiversity in aquaculture systems.

Conclusion

In summary, when considering the fish species commonly reared in culture fisheries in India, rohu and catla stand out due to their adaptability, growth rates, and cultural significance. Understanding these species helps in appreciating the broader context of aquaculture practices in the country.