Introduction to Fisheries and Aquaculture
What the exam tests
This domain checks whether you can distinguish capture fisheries from aquaculture and classify production systems. Capture fisheries harvest wild stocks from rivers such as the Brahmaputra and from beels, the floodplain wetlands of Assam. Aquaculture involves controlled water bodies, ownership or leasing, stocking, feeding and management. Expect questions on pond, cage, pen, raceway and integrated systems, and on species groups: Indian major carps, exotic carps, catfish and small indigenous fishes.
Core rules
- Aquaculture requires deliberate intervention: stocking, feeding, predator control and stock ownership.
- Capture fisheries depend on natural recruitment, migration and gear selectivity.
- Systems are classified by water type, intensity and integration, such as fish-rice or fish-duck.
- Beels may be leased and stocked, producing a managed capture-culture hybrid.
Worked example
A village leases a beel, clears aquatic weeds, stocks rohu fry and feeds rice bran. Is this pure capture fisheries? No. Stocking and feeding are culture interventions, so the operation is a managed hybrid. The reasoning turns on control and intervention, not on whether the water body is natural.
Traps that cost marks
Do not label every wild harvest as aquaculture. Do not assume cage culture needs no water-quality management. Do not ignore leasing, community rights and multiple uses of beels. Do not confuse a species name with a system name.
Key facts to recall
India’s fisheries sector includes inland, marine and aquaculture production. Assam’s inland resources include rivers, beels, reservoirs and ponds. Extensive systems rely mainly on natural food; intensive systems rely on formulated feed and aeration.