What if you could farm fish without owning a pond? That is the question ICAR-Central Institute of Freshwater Aquaculture (ICAR-CIFA) put in front of women farmers in Odisha this month — and the answer, shown live at its demonstration units, was a tank, some microbes, and a filter.
On 15 October 2026, ICAR-CIFA and Krishi Vigyan Kendra (KVK), Bhubaneswar, organised a programme to mark Rashtriya Mahila Kisan Diwas, with a clear focus: improving rural women’s earnings through scientific freshwater aquaculture. Farmers were introduced to Biofloc technology, the Recirculatory Aquaculture System (RAS) and drone applications in fish farming, and they visited demonstration units and farm facilities at ICAR-CIFA and KVK-Khordha to see improved practices in action rather than just hearing about them.
Another 82 farmers participated in the event, alongside an interactive session where farmers could put their own problems directly to scientists and seek expert advice. Women farmers Nandini Das and Ahalya Bhoi shared their experiences and challenges — the part of the day that matters most, because tank fish farming only works when the farmer running it can manage it day after day.
What happened at the programme
ICAR-CIFA Director P.K. Sahoo said scientific freshwater aquaculture could help women farmers improve productivity and generate sustainable incomes. His advice was practical rather than promotional: adopt modern systems such as Biofloc and RAS wherever they are technically and economically viable, and back that adoption with training and regular technical support.
That caution is the most important line in the whole event. A tank system is not a magic box. It needs aeration, water-quality checks, feeding discipline and a market for the harvest. What CIFA and KVK-Khordha offered was the other half of the deal: demonstration units to visit, scientists to question, and a route to follow-up support.
Other speakers underlined the same point from different angles. Anupama Baliarsingh, Dean of the College of Community Science at Odisha University of Agriculture and Technology, highlighted scientific training and diversified livelihood activities for household incomes and nutrition. Harapriya Nayak, Senior Scientist and Head of KVK-Khordha, stressed scientific farming, while H.K. De, Principal Scientist at ICAR-CIFA, called for wider access to technical knowledge and improved technologies. B.K. Bhanja, former Chief Technical Officer of KVK-Khordha, also spoke about backyard poultry as a supplementary income and household nutrition source — a reminder that most rural households do not live on one activity alone.
Biofloc vs RAS: which tank system suits whom?
Both systems farm fish in tanks instead of ponds, but they manage water in opposite ways. Understanding that difference is the first decision a new farmer has to make.
| Feature | Biofloc | RAS (Recirculatory Aquaculture System) |
|---|---|---|
| How water is managed | Beneficial microbes (floc) convert fish waste into microbial protein in the tank itself, with little or no water exchange | Water is continuously filtered, treated and recirculated back to the tank |
| Key equipment | Tanks, continuous aeration, carbon source to feed the microbes | Tanks, mechanical and biological filters, aeration and oxygenation, pumps |
| Space needed | Small — tanks can fit in a backyard or small plot | Small footprint, but needs a covered, planned layout for filters and plumbing |
| Daily skill needed | Monitoring floc, feeding, aeration and water quality every day | Monitoring filters, water quality and system health every day |
| Biggest risk if neglected | Aeration failure or unmanaged floc can crash water quality fast | Filter or power failure can crash water quality fast |
| Best for | Small farmers starting with limited land and wanting lower water use | Farmers aiming for higher control, higher density and year-round production |
The honest summary: biofloc is simpler to build and cheaper to start, but it demands daily attention to the microbial system. RAS gives more control and cleaner water, but it costs more to set up and needs reliable power and technical know-how. Neither system removes the farmer from the farm — both replace pond labour with tank management.
How a woman farmer can start — step by step
This is a practical route based on how CIFA and KVK programmes work, not a promise of subsidy or income. Follow the steps in order; skipping training is where most tank projects fail.
- Visit a demonstration unit first. Go to ICAR-CIFA, Bhubaneswar, or your nearest KVK and see a working biofloc or RAS unit. Ask what species they stock, how they feed, and what goes wrong most often.
- Take a training course before buying anything. Ask CIFA or KVK-Khordha about their farmer training calendar. Training covers water quality, feeding, aeration and disease basics — the four things that decide survival.
- Pick one system, not both. Start with the system your trainer recommends for your water, power supply and budget. A single working tank teaches more than three half-built ones.
- Check power and water before you stock. Both systems need continuous aeration. If your power supply is unreliable, plan backup aeration first — it is not an optional extra.
- Talk to your District Fisheries Officer about support. Ask which components are open in the current year under government schemes, what documents are needed, and what the unit-cost limits are. Do not begin construction on the assumption of a subsidy.
- Line up your market before harvest. Talk to local buyers, retailers or a women’s self-help group about who will buy the fish, at what size, and how often. A tank full of fish with no buyer is a loss, not an income.
- Keep daily records. Feed given, water checked, fish behaviour, mortalities. Records are what let a scientist or KVK expert diagnose a problem over the phone instead of guessing.
Why this matters beyond Odisha
Women already do much of the daily work in freshwater aquaculture — feeding, harvesting, processing and selling — but they are often missing from training rooms and technology demonstrations. A programme built around Mahila Kisan Diwas, with women farmers speaking about their own experience, is a small correction to that gap.
Tank systems matter for the same reason. Pond farming needs land and water spread that many women farmers do not control. A tank in a backyard or a small plot lowers the land barrier, even though it raises the skill and power barrier. That trade-off is exactly why CIFA’s message paired the technology with training and regular technical support, instead of presenting the tank alone as the solution.
Drones, also demonstrated at the programme, point to the next step: using technology for monitoring and transport in fish farming. For a small tank farmer, the immediate value is less about drones and more about the basics — clean water, steady aeration, good seed and a buyer. Get those right first.
What to ask before you invest
- Which species suits my local water, climate and market — and what size do buyers want?
- What does a full crop cycle cost, including feed, seed, power and aeration — not just the tank?
- Who do I call when water quality crashes at night, and how fast can they respond?
- Is there a training certificate or follow-up visit included, or does support end at the demonstration?
- What scheme, if any, is open this year for my category — and what does it actually reimburse?
If you are thinking about biofloc, start by testing your knowledge with our Biofloc MCQs: 20 Questions Every Aspirant Must Ace, and read our guide to Aquaculture Production System and its Types for how biofloc and RAS fit into the wider family of farming systems. For scheme support, see our guide to PMMSY Gives Fish Farmers 60% Subsidy in 2026 — but always confirm the current year’s open components with your District Fisheries Officer before spending.
The images in this post are illustrations of tank fish farming, not photographs of the 15 October programme itself.
Sources
The Statesman, “Odisha promotes scientific fish farming to boost women’s livelihoods”, 15 October 2026 (programme by ICAR-CIFA and KVK, Bhubaneswar, to mark Rashtriya Mahila Kisan Diwas; 82 farmers participated; Biofloc, RAS and drone applications demonstrated; demonstration units at ICAR-CIFA and KVK-Khordha). All event facts in this post are from that report; no income, cost or subsidy figure for this programme has been added, because the report gives none.