The cultivation of Dam Xanh fish (Bangana lemassoni), a unique fish species, has seen remarkable growth in Mai Chau district, thanks to its high economic value and effectiveness. Initially concentrated in Van Mai commune, farming has now extended to four other communes, namely Mai Hich, Mai Ha, Chieng Chau, and Son Thuy. These areas benefit from pristine underground water flowing from mountain crevices, providing ideal conditions for raising this specialty fish.

Staff of the
Centre for Application and Scientific Information under the provincial Department
of Science and Technology guide people on how to introduce and trace the origin
of Mai Chau district's Bangana lemassoni fish products.
Despite its reputation as a sought-after delicacy, annual
production primarily serves a limited market of local visitors and tourists in
Mai Chau.
According to Kha Van Sanh, Chairman of the Van Mai communal
People's Committee, ca dam xanh, also known as Bong fish, is a signature
specialty of Mai Chau. The fish thrives only in clean water environments,
making it unsuitable for cultivation in typical ponds, lakes, or rivers.
Although slow to mature, its meat is prized for its exceptional sweetness and
flavour, offering significant economic potential. In recent years, local
authorities have promoted commercial farming, helping residents gradually
improve their incomes.
To bring this unique fish to a broader market, the Mai Chau
district People's Committee has partnered with the Centre for Application and
Scientific Information under the provincial Department of Science and
Technology. This collaboration successfully established the trademark "Mai
Chau district’s Bangana lemassoni fish", enhancing its market presence.
Ha Trung Thao, Vice Chairman of the Mai Chau district
People's Committee, emphasised the importance of protecting and promoting
products with distinctive regional characteristics. By supporting farmers in
building certified trademarks, local authorities have expanded the reach of ca
dam xanh, boosting its value and contributing to the district's socio-economic
and tourism development.
Before the trademark's establishment, farmers faced numerous
challenges, including low competitiveness and market instability, noted Tran
Dinh Thang, Deputy Director of the Centre for Application and Scientific
Information. Despite the fish’s high quality, the lack of branding and
organised distribution limited growth. Now, with certification and a clear
brand identity, dam xanh fish benefits from improved marketing, traceable
origins, and expanded distribution networks.
Kha Van Tu, Chairman of the Van Mai Commune Farmers'
Association, shared that since receiving the collective trademark
certification, demand for the fish has surged. Although priced between 200,000
and 300,000 VND (7.8–11.8 USD) per kilogram, sales volumes have increased
three- to fourfold for households in the commune. Moreover, the customer base
has expanded from local residents and restaurants to buyers from other areas,
highlighting the growing appeal of this specialty.
Hoa Binh province’s economy posted an impressive Gross Regional Domestic Product (GRDP) growth rate of 12.67% in the first quarter of 2025, representing a 12.76% year-on-year increase, the highest rate recorded since the beginning of the current tenure, according to the provincial Statistics Office. This robust growth reflects years of strategic groundwork and sets a strong foundation for the province’s annual growth target of over 10%.
With a focus on cash crop farming with science - technology application and brand building, Lac Thuy district is gradually increasing production value, improving people's life quality, and laying the foundation for sustainable socio-economic development.
In recent years, the economic development model "Hoa Binh Earthworm Farm” run by Mr. Bui Van Dang in Co Giua Hamlet, My Thanh Commune (Lac Son district) has not only brought stable economic value but it is also environmentally friendly, helping to protect and reduce pollution, contributing to the construction of a green and sustainable agriculture.
Dao Village’s honey – a product certified with a 3-star OCOP (One Commune One Product) rating by Thong Nhat Agricultural Cooperative in Dao Village (Hoa Binh City) – is highly regarded by consumers for its quality, richness, and variety in packaging. The distinctively sweet taste of Dao Village’s honey leaves a lasting impression on anyone who has tried it.
In alignment with Project No. 07-DA/TU, issued by the Hoa Binh provincial Party Committee on November 1, 2021, Lac Thuy district has actively promoted investment and supported the sustainable development of its industrial and handicraft sectors during the 2021–2025 period. Alongside this, the district has remained committed to preserving and revitalising traditional craft villages.
Located in the northern part of Lac Thuy district, with a temperate climate and fertile soil, Phu Thanh commune has great potential and advantages in growing tea. The long-standing experience, combined with strict adherence to organic farming practices in the tea gardens, ensures that the dried tea products from Phu Thanh and Lac Thuy as a whole are sold out immediately upon production, providing a stable and prosperous life for the local people.