The success of any aquaculture project or fish farm depends to a large extent on selection of a suitable site. Site selection using the conventional method, based on very limited data, can result in inaccurate information and cause discrepancies among the implementing agencies. The utilisation of remote sensing and geographic information systems can provide a useful source of additional information. This article provides a GIS-based analysis of the suitability of sites for trout farming and the establishment of sport fisheries in the Menchukha valley, Arunachal Pradesh.

Farming in the mid hills is largely characterised by small land holdings, low productivity, scarcity of agricultural land and irrigation facilities, and uneven terrain. Low returns in farming and unemployment problems in the mid-hills are compelling youth to move to the cities to find livelihoods. Adoption of integrated farming practices utilising available land, water and waste products more efficiently can improve farm productivity and income. The achievements of a young farmer from a remote village working to motivate others are documented in this article.

The Asian seabass Lates calcarifer is a highly preferred foodfish in West Bengal, with a high meat content and commercial value compared to Indian major carps. Found in estuarine systems on the north-east and south-east coasts of the Bay of Bengal, Asian seabass is a hardy, euryhaline fish and suitable for culture in coastal marine, inland saline, brackishwater and freshwater ecosystems. During the past decade, Asian seabass has received greater attention and has been increasingly farmed commercially in modified-extensive systems in large freshwater impoundments (termed ‘mithen gheri’ in local dialect).

This report summarises the proceedings of the 17th meeting of the Advisory Group, held 13-14 November 2018 in Bangkok, Thailand. The group's role includes reviewing disease trends and emerging threats in the region, identifying developments in global aquatic disease issues and standards, evaluating the Quarterly Aquatic Animal Disease Reporting Programme and providing guidance on regional strategies to improve aquatic animal health management.

In this issue:

Collection of tubifex worms from the Adi Ganga canal, West Bengal as means of livelihood; Some facts for the grow-out culture of an endangered catfish, Clarias magur; The cryptic domain of gut microbiota in composite culture of Indian major carps; Integrated rice-fish farming in hilly terraces of the Apatani Plateau, Arunachal Pradesh.

Although relatively slow growing, market demand for Clarias magur is sufficient to make it economically attractive for aquaculture. Supply of this species is through a combination of wild caught and cultured fish. However, a drastic reduction in wild populations has led to C. magur being listed as endangered by the International Union for Conservation of Nature. Only limited quantities of cultured fish are available. The article communicates the aquaculture practices of C. magur including hatchery, nursery and grow out.

The digestive tract of all vertebrates including fish is known to harbour a complex microbial ecosystem with a large, diverse and dynamic collection of microorganisms. These microbes become an integral component of the host animal with intimate host-microbe associations. In the following study, we employed both bacterial enumeration and culture independent DNA fingerprinting approach to examine the presence of host-specific gut microbiota in Indian major carps related to their occupancy of distinct ecological niches.

Rice-fish farming is a popular activity amongst the Apatani tribe of the Ziro valley, conducted in their wet rice terraces. The strains of fish cultured include mirror carp Cyprinus carpio specularis, scale carp C. carpio communis and leather carp C. carpio nudus, cultivated synchronously with local rice cultivars (Oryza sativa), viz. eamo, ampu, mipya, pyapu, pyaping and eylang. This article describes the integrated farming practices and socio-economic circumstances of the Apatani in the Yachuli, Hapoli, Hong, Hari, Hija, Bula, Dutta and Old Ziro villages.

The 79th edition of the Quarterly Aquatic Animal Disease report contains information from eleven governments. The foreword discusses the outcomes of the 17th Meeting of the Asia Regional Advisory Group on Aquatic Animal Health, held in Bangkok, 13-14 November 2018.

In this issue:

Current status of freshwater cage aquaculture in India; Fattening of mud crab Scylla serrata in estuarine region of south-eastern West Bengal; Aquaponics - sustainable farming method in the fight against hunger; aquatic invasive apple snails (Pomacea spp.) in Timore-Leste - current status, spread and management in rice fields; NACA Newsletter.

Initial attempts to develop freshwater cage aquaculture in India focussed on air breathing catfish and Indian major carps in the Yamuna and Ganga rivers, with later efforts in several large reservoirs. Cage-based aquaculture in inland waters is currently being promoted by some state governments with a view to enhancing fish production. This article examines the history of cage aquaculture in India and some of the factors to be considered in cage design and site selection.

In this issue:

Joint FAO-NACA workshop reviews aquaculture farming system classification scheme; Join us for the Global Conference on Aquaculture 2020; Expert Consultation on Genetically Responsible Aquaculture; Strengthening governance in aquaculture; Pike perch and in-pond raceways; Quarterly Aquatic Animal Disease Report, April-June 2018.

The 78th edition of the Quarterly Aquatic Animal Disease Report contains information from twelve governments in the Asia-Pacific region. The foreword discusses three recent aquatic animal health consultations: The ASEAN Regional Technical Consultation on Aquatic Emergency Preparedness and Response Systems for Effective Management of Transboundary Disease Outbreaks in Southeast Asia; the Regional Consultation and Related Study on Antimicrobial Resistance Risk to Aquaculture in Asia; and the Preliminary Consultation on Monitoring of Antimicrobial Resistance in Bacterial Pathogens in Aquaculture.

In this issue:

Concept of seed production of Heteropneustes fossilis in farmers' fields in West Bengal, India; Fishing gear and practices in flood waters of Assam; Fisherwomen empowerment: Shedding light on the invisible gender; Integrated multi-trophic aquaculture systems: A solution of sustainability.

The freshwater catfish Heteropneustes fossilis is a high-priced fish, well regarded in India for its nutritional and medicinal properties. The first successful induced breeding of this fish was in 1956 at Bangalore Central College (under the then Mysore University), although seed production was not standardised until 2000, at ICAR-CIFA, Bhubaneswar. This article describes broodstock maintenance, induced breeding techniques and the nursing of H. fossilis larvae in small ponds for sale in fish seed markets.

Annual flooding of the Brahmaputra and Barak rivers provides Assam with some of the finest floodplain wetlands in India. Local people have adapted their livelihoods to the flood cycle and fishing remains a traditional activity of tremendous importance in rural communities, with a diverse range of fishing gear and methods developed. This article documents some of the major fishing gears of Assam, with reference to their efficacy and targeted fish species.

The 77th edition of the Quarterly Aquatic Animal Disease Report contains information from nine governments. The foreword discusses an intensive seven-day training course on tilapia lake virus (TiLV) that was jointly organised by China's National Fisheries Extension Center, Sun Yat-Sen University and the Food and Agriculture Organization of the United Nations.

In the ornamental fish markets of India, the euryhaline spotted scat Scatophagus argus and pearlspot Etroplus suratensis are popularly sold as ornamental fish. This article describes the nursing of wild-caught spotted scat seed and in-pond breeding of pearlspot to produce marketable sized fish at the Joykrishna hatchery and fish seed farm, located in the Hooghly River estuarine zone in coastal West Bengal, India. The fish are reared in brackishwater ponds for commercial utilisation as ornamental fish, supplying Hyderabad and other cities.

India’s share of the international ornamental fish trade is marginal but has been able to show consistent growth over the years. Of the total ornamental fishes traded by India, approximately 85% are native fishes sourced from the Western Ghats and North East India. The aquaculture of native fishes in seasonal water bodies can play a role in both conservation and generation of livelihoods. Imparting knowledge regarding ornamental fish trade and establishing market linkages is required to further develop the industry.

In this issue:

Rearing of spotted scat and pearlspot in coastal West Bengal, India; harvesting Eurayle ferox (makhana) from wetland fisheries of Assam; prospects of ornamental fish culture in seasonal water bodies in Assam; production of tubifex, a new dimention in aquaculture in feeding juvenile fish; invasive apple snails in Brunei Darussalam; aquaculture trends and opportunities in Sindh, Pakistan; NACA Newsletter.