Fish + Veggies, One Tank: CIFA's Aquaponics Push

One tank. Fish swimming below, vegetables growing above — and the fish waste feeding the plants. That is aquaponics, and Odisha’s fisheries officials have just been trained in it. The ICAR–Central Institute of Freshwater Aquaculture (ICAR-CIFA), Bhubaneswar, ran a five-day training programme on “Aquaponics: Principles, Designs & Operational Management” from Monday, 2 November to Friday, 6 November 2026 for officials of the State Fisheries Department, Government of Odisha. The programme concluded on 6 November with a feedback session and certificate distribution — and the officials who attended it are now expected to carry the technology out to fish farmers across the state.

This matters for farmers, not just officials. Aquaponics lets a household with little or no pond area grow fish and vegetables from the same water, in the same small footprint. This post explains what happened at CIFA, how an aquaponic system actually works, which fish and plants suit Indian conditions, and how a farmer can start learning — with the honest gaps stated plainly, because no fee, seat count or subsidy was announced with this training.

CIFA aquaponics training at a glance

Fact	Detail
Programme	“Aquaponics: Principles, Designs & Operational Management” — five-day training programme
Dates	Monday, 2 November – Friday, 6 November 2026 (concluded 6 November)
Organiser	ICAR–Central Institute of Freshwater Aquaculture (ICAR-CIFA), Bhubaneswar
Participants	Officials of the State Fisheries Department, Government of Odisha
Convenor	Dr P. K. Sahoo, Director, ICAR-CIFA
Course Director	Dr B. C. Mohapatra, Principal Scientist, ICAR-CIFA
Course Coordinator	Dr E. M. Chhandaprajnadarsini, Senior Scientist, ICAR-CIFA
What was taught	System design, fabrication, operation and management; fish production; plant cultivation; water quality; fish health; nutrient management; IoT applications
Also covered	Economics of aquaponics, future prospects in Odisha, and bankable schemes for aquaponics-based enterprises
Hands-on part	Participants visited CIFA’s aquaponics facilities to see system establishment and day-to-day management in practice

What is aquaponics, in plain words?

Aquaponics combines aquaculture (raising fish) with hydroponics (growing plants without soil) in one recirculating loop. Fish live in a tank. Their waste — mostly ammonia — is carried by water to the plant beds. There, beneficial bacteria convert it into nitrate, which the plants absorb as fertiliser. The plants clean the water, and the cleaned water flows back to the fish. One input, fish feed, produces two outputs: fish and vegetables.

The Food and Agriculture Organization of the United Nations (FAO) describes the system in its manual Small-scale aquaponic food production (FAO Fisheries and Aquaculture Technical Paper No. 589, 2014) as an ecosystem of three living groups — fish, plants and bacteria — that must stay in balance. Get the balance right and the system largely runs itself. Get it wrong and the fish suffer first, because ammonia and nitrite are toxic to them.

How the loop works: the nitrogen cycle

Everything in aquaponics depends on two groups of nitrifying bacteria. The FAO manual lays out the chain in three steps:

Fish produce ammonia. Fish excrete waste, mainly as ammonia. In a closed tank, ammonia builds up fast and is highly toxic to fish.
Bacteria convert ammonia to nitrite. Ammonia-oxidising bacteria — commonly of the genus Nitrosomonas — turn ammonia into nitrite. Nitrite is also toxic to fish, so this step alone does not solve the problem.
Other bacteria convert nitrite to nitrate. Nitrite-oxidising bacteria — commonly Nitrobacter — turn nitrite into nitrate. Nitrate is the fertiliser plants need, and it is harmless to fish at the levels found in a working system.

The plants then take up the nitrate, the water is cleaned, and it returns to the fish tank. The bacteria live on the surfaces inside the system — the grow media, tank walls and biofilter — and the FAO manual warns that they are slow to establish, taking days and sometimes weeks. Patience at start-up is, in the manual’s words, one of the most important management factors. A new system should be stocked lightly and monitored daily until ammonia and nitrite readings stay near zero.

Water quality is the daily job. The FAO manual gives practical ranges: nitrifying bacteria work across a pH of about 6 to 8.5, and the manual recommends keeping the system around pH 6–7 as a compromise between the needs of the fish, the plants and the bacteria. Dissolved oxygen should stay at 4–8 mg per litre — the same range the fish and plants need — and nitrification stops altogether if oxygen falls below 2 mg per litre. In practice that means an air pump or aeration is not optional, and a power cut is the single biggest risk to a small system.

What the Odisha officials actually learned

The training was not a lecture-only programme. According to the reports from CIFA, the five days combined expert lectures with hands-on demonstrations and practical exposure, and participants visited CIFA’s own aquaponics facilities. The technical sessions covered:

System design and fabrication — how a unit is built, from fish tank to grow bed to plumbing.
Operation and management — the daily routine of feeding, monitoring and maintenance.
Fish production and fish health — keeping the fish alive and growing in a recirculating system.
Plant cultivation and nutrient management — what to grow and how the plants are fed by the fish.
Water quality management — the ammonia–nitrite–nitrate chain above, and what to do when readings go wrong.
IoT applications — sensors and remote monitoring for water quality, which matter when a system needs watching around the clock.
Economics and bankable schemes — what a unit costs to build and run, and which financing routes could support an aquaponics enterprise.

The programme was conducted under the convenorship of Dr P. K. Sahoo, Director of ICAR-CIFA, with Dr B. C. Mohapatra as Course Director and Dr E. M. Chhandaprajnadarsini as Course Coordinator. It ended on 6 November 2026 with an interactive feedback session and distribution of certificates. CIFA expects the training to strengthen the capacity of Odisha’s fisheries officials to promote sustainable, integrated aquaculture technologies across the state — which is why farmers should watch their district fisheries office for follow-up programmes.

Which fish and plants work in aquaponics?

The FAO manual discusses the fish and plant choices in detail, and the combinations below are the ones most commonly used in small-scale systems. They are a starting point for learning, not a guarantee — local climate, seed availability and market demand decide what actually pays.

Role	Common choices	Why they fit
Fish — warm water	Tilapia, catfish, common carp	Hardy, tolerate the warm water and the water-quality swings of a small system; tilapia is the most widely used aquaponics fish worldwide
Fish — Indian context	Indian major carps (catla, rohu, mrigal)	Familiar to Indian farmers, seed is widely available, and there is a ready local market — but carps need more space and oxygen than tilapia
Leafy greens	Lettuce, spinach, coriander, mint, basil	Fast-growing, light feeders that do well on the nitrate a fish tank produces; the FAO manual’s rule of thumb is about 40–50 g of fish feed per day for each square metre of leafy greens
Fruiting vegetables	Tomato, chilli, brinjal, cucumber	Heavier feeders that need a well-stocked, mature system; the FAO manual suggests roughly 50–80 g of feed per day per square metre for fruiting crops

The rule of thumb above is the FAO manual’s, and it shows the central discipline of aquaponics: the fish feed the plants. Too many fish for the plant beds and ammonia climbs; too few fish and the plants go hungry. Beginners are usually advised to start with leafy greens, which forgive mistakes, and move to fruiting vegetables only once the system is stable.

Why aquaponics is getting attention now

Three pressures are pushing farmers and officials toward systems like this. First, land and water are tight: aquaponics recirculates the same water instead of draining and refilling a pond, and it produces two crops from one footprint — useful for households with a courtyard or rooftop rather than a pond. Second, input costs bite: the plants are fed by fish waste rather than bought fertiliser, so one feed bill serves two harvests. Third, urban demand is rising: pesticide-free leafy greens and fresh fish sell well near towns, and a small unit close to a market can harvest daily.

None of that makes aquaponics easy money. A system needs a pump and aeration running almost constantly, so electricity is a real running cost and a power cut can kill fish within hours. The build cost — tank, grow beds, plumbing, pump, biofilter media — has to be recovered from two modest harvests, not one big one. And the farmer is managing two crops at once: fish health and plant health, with water chemistry in between. The CIFA training spent time on the economics and on bankable schemes precisely because the numbers have to work before a farmer builds anything.

How a farmer can start learning aquaponics: 5 steps

Talk to your district fisheries office. The officials trained at CIFA are the people now expected to promote this technology in Odisha. Ask whether a farmer-level demonstration or training is planned in your district, and what support exists locally.
Contact ICAR-CIFA directly. CIFA is the national institute for freshwater aquaculture and runs training programmes for farmers and officials. Its website (cifa.nic.in) lists current programmes and contact details — ask specifically about aquaponics training and about visiting its aquaponics facility.
Take a short course before building anything. ICAR-CIFE, Mumbai, runs short skill-development courses through the year — its November–December 2026 calendar alone lists 14 programmes, including biofloc and farm-made feed. A few days of training costs far less than a failed build. See our guide to CIFE’s current courses, linked below.
Start small and learn the water first. The FAO manual’s advice is to build a small unit, stock it lightly, and watch ammonia, nitrite and pH daily while the bacteria establish. A home-scale media-bed unit is a classroom; a commercial unit is a business. Do not scale up until the small one runs steadily for a full crop cycle.
Ask about finance in writing. The CIFA sessions covered bankable schemes for aquaponics enterprises, but no specific scheme, subsidy rate or application window was named in the reports of this training. If anyone offers you an aquaponics subsidy, ask for the scheme name and the official notification — and check it with the State Fisheries Department before paying anything.

Honest gaps — read this before you act

This training was for officials, not farmers. The 2–6 November programme trained State Fisheries Department officials. It was not an open-enrolment farmer course, and no farmer batch was announced with it.
No fee, seat count or application link was published for this programme, and none is claimed here. The reports name the coordinators and the institute, not a registration process.
No aquaponics-specific subsidy was announced with this training. The sessions covered the economics of aquaponics and bankable schemes in general, but no scheme name, subsidy percentage or deadline was published. Do not trust a subsidy figure from an unofficial source.
No cost figure for a home unit is given here because costs vary widely with size, materials and location. Get a written estimate from a supplier or from CIFA before committing money.
The technology is proven, not new. Aquaponics has been practised for decades and is documented in the FAO manual cited below. What is new is the institutional push: a national institute training state officials to promote it in Odisha.

Frequently asked questions

Can I grow fish and vegetables in one tank at home?
Yes — that is exactly what aquaponics is. A fish tank is connected to plant grow beds, and the same water circulates between them. Start with a small unit, leafy greens and a hardy fish such as tilapia, and learn the water chemistry before scaling up.

Do I need a pond for aquaponics?
No. Aquaponics is designed for tanks and grow beds, which is why it suits households with little land. You do need reliable electricity for the pump and aeration, and a shaded spot out of harsh sun.

Is aquaponics profitable for a small farmer?
It can be, because one feed input produces fish and vegetables, and the water is reused. But the build cost and electricity bill are real, and profitability depends on local prices for both crops. The CIFA training covered the economics for this reason — work out the numbers for your own market before building.

Where can I learn aquaponics properly?
ICAR-CIFA in Bhubaneswar is the institute that ran this training, and ICAR-CIFE runs short skill-development courses through the year. Your district fisheries office is the first stop for local programmes. The FAO manual Small-scale aquaponic food production (Technical Paper No. 589, 2014) is freely available online and is the standard reference for how the system works.

Was this training open to farmers?
No. The 2–6 November 2026 programme at CIFA was for officials of the Odisha State Fisheries Department. Farmers interested in a future batch should ask their district fisheries office whether a farmer-level programme is planned.

Fish + Veggies, One Tank: CIFA’s Aquaponics Push