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.