A floating fish farm is a raft that carries a family home on its deck and fish cages in the river below. On the Hau River at Chau Doc, coloured raft houses rise and fall with the current while catfish break the surface when feed reaches the water. This is a working home and farm, not a floating market.
What Is a Floating Fish Farm?
A floating fish farm is a raft that carries a family home on its deck and fish cages beneath it, held in the river’s current. Families call the home a nhà bè, or raft house, and the cage a net or slatted pen hung into the Hau River, the Bassac branch of the Mekong.
The Chau Doc raft village formed in the 1960s and grew from the 1970s. Families live above their stock so they can feed the fish at any hour and rise with the river. Floating markets trade fruit and vegetables by boat; floating fish farms rear fish in cages below the home.
How Do River Families Live on a Fish Raft?
Home, workplace, and shop share one floating deck. The family wakes to check the water and stock, feeds the fish through the morning, sells or processes fish around midday, and turns the working deck back into a household by evening.
What Does a Raft Look Like, and How Does It Float?
Homes sit at the back of the raft and square cages at the front, with floats beneath and mooring lines holding the structure in place. A reported raft measures about 4 m by 7–8 m (13 ft by 23–26 ft), a footprint of approximately 28–32 m² (301–344 sq ft).
In a flood, the raft rises with the water and families can pay out the mooring lines. The raft stacks fish, floats, and a family in three layers.
| Part | What it is | What you notice on a visit |
|---|---|---|
| Cage | Net or slatted pen under the frame | Water churns at feeding time |
| Float | Drums, foam, pontoons, or timber that carry the raft | The raft moves with each wave |
| Walkway | Plank path between cages and rafts | Boards sway underfoot |
| Deck and house | Floor and rooms above the cages | Family life beside the fish |
| Mooring | Line that holds the raft in the current | Ropes give as the river rises |
What Does a Working Day on a Raft Involve?
A raft day starts before dawn with a check of the water and fish. Through the morning, pellets go into the cages at set times. Ask the farmer how much feed goes into each cage, as quantities vary by stock and season.
By midday, the work turns to sale: traders buy fish from the raft, and some families dry part of the catch. By evening, the working deck becomes a household again.
How Do Families Farm Fish in the Cages?
Families raise catfish and other river fish in cages hung under the raft, feed them by hand, and rely on the current to keep the water fresh. Moving water passes through the mesh, renews oxygen, and carries waste away.
A current of 10–20 cm per second (4–8 in per second) keeps water exchanging through a cage and helps clear solid waste. Too much feed or too many fish can foul the water, while fouled netting can slow the exchange. Farmers watch for disease and adjust feed or stock when fish show stress.
Which Fish Live Beneath the Raft?
Most Mekong river rafts raise catfish, mainly pangasius (cá tra) and basa (cá basa), alongside other species. A national report recorded pangasius of 3.3–11 lb (1.5–5 kg) in Chau Doc cages.
| Fish | Vietnamese name | What you may see |
|---|---|---|
| Pangasius | cá tra | Surfaces at feeding |
| Basa | cá basa | Close relative of pangasius |
| Redtail catfish | cá hồng vỹ mỏ vịt | Red tail fin |
| Tiger shovelnose catfish | cá cọp | Dark stripes |
| Giant carp | cá hô | Large scales |
| Clown knife fish | cá thác lác | Silver, spotted flanks |
| Snakehead | cá lóc | Long body and leaps for feed |
Where Can You See Floating Fish Farms on the Mekong?
Chau Doc in An Giang and Con Son Islet near Can Tho are two Hau River sites where visitors can see working rafts. Chau Doc is the stop on every Calypso Mekong voyage.
Chau Doc, An Giang: The Raft Stop on Every Calypso Mekong Voyage
Chau Doc holds the best-known raft village in the Mekong Delta, on the Hau River beside the town. It formed in the 1960s, and a 2017 national report counted about 300 cages. A more recent fisheries-magazine count lists 161 coloured raft houses; houses and cages are different measures, so confirm the current figure locally.
The Cham villages of Chau Giang and Chau Phong lie across the river on two islets. Together with the raft village, they show the cultural and economic life of both banks.
Con Son Islet, Can Tho: A Family-Run Raft Near the City
Con Son is a 67 ha (166 acre) river islet, about five minutes by boat from Co Bac wharf in Binh Thuy and about 600 m (656 yd) from the bank. Community tourism began in late 2014; 74 households live on the islet and 15 offer visitor services, according to a 2025 report.
Bay Bon’s raft holds up to 30 cages on the Hau River and opened to visitors in 2016. It raises more than 10 species, including redtail catfish, giant barb, and Jullien’s golden carp. This account is based on official sources rather than a Calypso Mekong visit.
How Do Floating Fish Farms Welcome Visitors?
Raft families welcome visitors for short stops built around feeding the fish and talking with the farmer. Your boat ties up, you walk the planks, hand-feed pellets, watch the surge at the surface, and ask questions.
A typical raft stop lasts about 20–30 minutes. Three useful questions open the conversation:
- How long does a fish take to reach harvest?
- What does the family feed the fish?
- How high does the river rise?
The answers change with the season, the species, and the family business.
Four Rules for Visiting a Fish Raft
A raft is a family’s home and workplace, so four simple rules protect the family, the fish, and the river.
| Rule | Why it matters |
|---|---|
| Ask before photographing people | The raft is a home as well as a workplace |
| Carry rubbish off the water | Waste can harm the river and the fish |
| Wear the life jacket, hold the rail, and watch the planks | Walkways sway and gaps can be wet or slippery |
| Feed only the pellets the farmer hands you | Other food can harm the fish or foul the cage |
When Is the Best Time to See a Floating Fish Farm?
November to April is the driest and easiest season. The rafts work all year, and the river usually reaches its highest stage from late September to mid-October. Choose the dry season for easier access or the high-water period for the widest river, and allow extra time in October if roads are flooded.
| Season | Months | Water and weather | What you see | Plan for |
|---|---|---|---|---|
| Dry season | November–April | Lower river and steadier weather | Daily raft work | Midday heat; go between 7:00 and 10:00 am |
| Rainy season | May–October | Afternoon showers and rising river | A fuller river | Rain jacket |
| High-water peak | Late September–mid-October | A 2025 Chau Doc forecast gave 3.4–3.6 m (11.2–11.8 ft) | The widest river of the year | Flooded roads in Can Tho; keep a spare half-day |
Water levels differ by year. On October 7, 2025, nearly 0.5 m (1.6 ft) of floodwater covered some Can Tho roads.
How Do Floating Fish Farms Shape Delta Life and Trade?
Rafts let families earn a living on water that floods fields. The national pangasius trade was worth nearly US$2.2 billion in 2025 exports, up 8% on 2024, but that figure covers the whole Vietnamese industry rather than one river town.
Fewer families now remain on the water as climate pressure, polluted river water, and low fish prices squeeze incomes. Raft counts vary by year and source. A respectful visit at Chau Doc helps keep the work and the community visible without treating a home as a display.
Questions About Floating Fish Farms
Is It Safe to Walk on a Fish Raft?
Yes, with care. Planks sway, so wear the life jacket on the boat, hold the rail, and wear non-slip shoes. Visitors with limited mobility should tell the guide before the stop.
What Is Pangasius, the Fish on Most Mekong Rafts?
Pangasius (cá tra) is a freshwater catfish farmed in the Mekong Delta and the species most visitors see in raft cages. Basa (cá basa) is its close relative.
What Kinds of Floating Fish Farm Exist in Vietnam?
Vietnam has river rafts that rear freshwater catfish beside a family home, sea-cage villages in sheltered bays such as Lan Ha Bay and Vinh Hy, and HDPE cage farms such as Hon Nghe, where plastic-pipe frames replace wooden ones at sea. This article covers river rafts.
How Do Chau Doc Rafts Differ From Con Son Rafts?
Chau Doc is a village of many rafts, while Con Son is known for a family-run raft with up to 30 cages. Chau Doc raises commercial catfish and is the stop on every Calypso Mekong itinerary; Con Son keeps native Hau River species and lies five minutes by boat from Co Bac wharf. Choose Chau Doc for the village and Con Son for a shorter family visit.
What Does Life on a Fish Raft Show About the Mekong?
A floating fish farm makes the river both home and workplace. The cages depend on the current, the family depends on the cages, and the visitor sees only a small part of a working day. Step aboard carefully, listen before photographing, and let the farmer’s explanation lead the visit.