Rearing of catla, rohu and catfishes can be categorised under

Rearing of catla, rohu and catfishes is categorised under pisciculture. 

• Pisciculture: Cultivation and raising of fish, typically in controlled environments like ponds or tanks, for commercial or recreational purposes.
• Shellfishery: The cultivation and harvesting of shellfish, including mollusks and crustaceans, often for their edible meat, such as oysters, clams, and shrimp.
• Sericulture: The rearing of silkworms to produce silk. This involves nurturing silkworms, feeding them mulberry leaves, and harvesting their silk cocoons for textile production.
• Mariculture: A specialised form of aquaculture involving the cultivation of marine organisms like fish, shellfish, and seaweeds in ocean environments, often for commercial purposes.