India

In this issue:

Resources and biodiversity of seahorses and their need for conservation in India. Captive breeding of pangasid catfish Pangasius pangasius. Establishment of post-tsunami rehabilitation information units in Thailand. Poor farmers culture tilapia intensively in ponds in Central Luzon, Philippines. Simple herbal treatment for treatment of EUS in snakehead. DNA vaccination in health management. The role of immunostimulants. Red tilapia cage culture in central Thailand. Quality improvement of farmed fish in Iranian markets.

In this issue:

MPEDA-NACA sustainable shrimp village demonstration programme. Inter-calibration of white spot syndrome virus (WSSV) PCR laboratories in India. Shrimp health management training. Rotary International/NACA meeting facility up at Koh Yao Noi. Tsunami-affected farmers train in marine cage aquaculture. Marine finfish aquaculture network at the APAN meeting in Singapore. Aquatic animal health policy workshops build consensus in ASEAN nations. Aquaculture Compendium released. Developments in establishing a conservation plan for the Mekong giant catfish. ROUNDTABLE: Exploring south-south cooperation opportunities in sustainable shrimp farming in West Africa, Conakry (Guinea). Technical missions to Cambodia and Lao PDR.

This report examines the role mariculture could play in reducing poverty and providing alternative livelihood opportunities for people living in coastal areas. This includes a review of the current status of coastal poverty, coastal livelihoods and vulnerabilities within the Asia-Pacific region and the experiences and examples of sustainable economic development through mariculture. This review then identifies key follow-up actions and recommends strategies for future pro-poor mariculture development.

This report, the 32nd in the series, contains information about the aquatic animal health status of fifteen states in the Asia-Pacific region. The foreword discusses regional cooperation for promotion of aquatic animal health management.

In this issue:

High-health postlarvae a prerequisite for sustainability of the Indian shrimp industry. Broodstock and all-female scampi grow out ponds in south India. Genetically modified fish and potential applications. Rainbow trout farming in hill terraces of Nepal. Sugar industry by-products as plankton boosters and yield enhancers in carp culture. Growth and production of Penaeus monodon in low saline culture systems. Poor households raise prawns for export. Marine fish marketing in Bangladesh.

In this issue:

NACA Governing Council endorses new work programme, elects Sena De Silva as next Director General. RapiDot Kit - Farmer friendly kit for WSSV detection. Regional mariculture program strengthened. Economics and marketing analysis of the live reef fish food trade in the Asia-Pacific. Workshop on molecular techniques in aquaculture and seafood safety, Mangalore, India. Better-practice approaches for culture-based fisheries development in Asia. High-level Bahrain fisheries deletation visits Iran. First monthly meeting of fish farmers at One-stop Aqua Shop in Punjab Pakistan. Fish breeding training program for farmers of OAS, Kaipara. Provincial workshops on National Fisheries Policy and Strategy Framework held in Punjab and Sindh, Pakistan. Monitoring and evaluating the impacts of aquaculture on the agency and well-being of women. STREAM welcomes AYAD volunteer. Workshop to strengthen aquatic animal health capacity and biosecurity in ASEAN. Asian Federation for Information Technology in Agriculture (AFITA) 2006 in Bangalore. Aquaculture rehabilitation project launched by Indonesian Minister of Marine Affairs and Fisheries.

These guidelines provide advice on producing fish seed in small-scale hatcheries. This publication is also available in Oriya.

‘Spawn’ is the name for the young fish about three days old that are available from hatcheries. Sometimes these young fish are also called hatchlings. The spawn of catla, rohu and mrigal is about 6-8 mm long. At this stage, the ‘yolk sac’ is absorbed, the mouth opened and the fins fully developed. Spawn are reared intensively, first to the ‘fry’ size and then to the ‘fingerling’ size. All the three stages are marketed and collectively called ‘seed’.

The “fast fingerling system” can produce advanced fingerlings about two months earlier than they are normally available from fish farms.  The farmer uses just one pond for continuous growing until fingerling size is reached, and fewer fish are stocked. A farmer with a small, seasonal pond can produce fingerlings in one month. These can then be sold for a high price because everyone wants fingerlings as early as possible.

The fingerling rearing pond, like the nursery pond, should be free from weeds and predators. Submerged weeds and predators are killed by mahua oilcake, which then acts as a good fertiliser. If there are no weeds, to kill predators and competitors quickly you can just add 100 kg of urea followed 24 hours later by 200 kg of fresh bleaching powder for a 1-ha area of a 1-m deep pond.

In watersheds, medium irrigation projects can be useful for aquaculture even though these water bodies are many times larger than ponds, and are basically built for irrigation or water storage. However, the full potential of these water bodies is not yet realised. Net pens or cages can be used to rear fingerlings in such environments.

It is best to stock advanced fingerlings in large ponds, tanks, and in both small and large reservoirs, since they can better escape predators and competitors. Seasonal ponds, often 0.10-0.15 ha and 1.5-1.8 m deep can be used as rearing ponds for raising advanced fingerlings. Low water levels at the end of the season will make netting and harvesting easy.

Everyone wants advanced fingerlings as early after the rains as possible. They fetch a good price and make marketable fish production possible in seasonal ponds. One way to produce early season advanced fingerlings is to grow them in perennial ponds and store them at high density with minimal feeding for the coming year. Whe such "stunted" fingerlings are stocked into ponds with good feed they grow fast and can be marketed in about 6-8 months.

Common carp is a foreign fish and there are several varieties. The variety used in Western Orissa is the fully scaled carp, which suits the tropical climate. Common carp lives and feeds near the pond bottom and can be grown with the Indian major carps, catla, rohu and mrigal as a 'polyculture' (which means growing many different types of fish together). It can also be grown alone, as a 'monoculture' in rice fields with high dykes that retain water.

These guidelines provide advice on producing fish seed of the Indian major carps in hapas within ponds to improve survival.

In this issue: Policy development as a theme and policy briefs as a genre. Decriminalising Cambodian family-scale fishers through a livelihoods approach to law reform. Longer pond leases in Orissa. One-stop Aqua Shop - a "one-window delivery" service center for aqua-farmers and fishers. Fisheries and aquaculture policy formulation process in Pakistan. Improving the international marine ornamental fish trade to sustain and improve the livelihoods of poor people involved in the trade. About the STREAM Journal. About STREAM.

In this issue:

Nursery rearing of silver barb Puntius goniotus. Artemia enrichment and biomasss production for larviculture. Seed production of mud crab Scylla serrata in India. Macrobrachium on the southwest coast of India. Fish wastes in urban and suburban markets of Kolkata: Problems and solutions. Groups of poor women farming carps in leased ponds, Bangladesh. Lymphocystis disease and diagnostic methods in China. Mesocosm technology advances grouper aquaculture in northern Australia.

In this issue:

Training workshop on molecular genetics. Outcomes of the 8th Technical Advisory Committee Meeting. Taking the 'grey' out of 'grey literature'. An introduction to the South Iran Aquaculture Research Center. Aquaclubs in India achieve good crops this year, with further challenges ahead. Rebuilding resilience of coastal populations and aquatic resources. Recent activities in STREAM. First international PCR training workshop completed. AusAID funds two aquatic animal health projects. Asia Regional Advisory Group continues to support aquatic animal disease management in the region. Indonesia accedes to the NACA Agreement. Governing Council 17 to set NACA Work Programme 2006-2010. Marine fish culture manuals now available in Thai. Aquaculture Rehabilitation Guide in Aceh, Indonesia. Boat building in the tsunami affected areas of NAD: Fishing vessel quality issues. Australasian Aquaculture 2006, 27 - 30 August, Adelaide. East Asian Seas Congress, 12-16 December 2006, China. Aquafeed Production Workshop, 8 March 2006, Thailand.

It was common to believe that fish cannot be cultured in seasonal ponds. However, fish can be produced in any pond of any size, anywhere in Orissa, provided that the water quality is good enough. A small and shallow pond that retains water for two months can be used for raising fry. A larger and deeper pond holding water for three to four months can be used for fingerling production.

If the place where fish live is good and healthy, fish rarely die from diseases. If we stress fish by roughly handling them, by keeping too many together, or by not feeding them well, they may suffer from disease. Depending on the disease, we may see lots of fish die in a short time, small numbers of fish deaths every day, reduced growth, marks on the fish, or a change in the way they look or swim.