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.

This is the proceedings of the workshop on Building capacity to combat impacts of aquatic invasive alien species and associated trans-boundary pathogens in ASEAN countries, held in Penang, Malaysia, on the 12th-16th July 2004. The workshop built on the recommendations from a 2002 workshop organised by the Global Invasive Species Program and a 2003 workshop of countries sharing the Mekong watershed, in promoting awareness, coordination mechanisms and information exchange systems and identifying management and risk mitigation measures.

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 are the proceedings of two Workshops on Capacity Building for Situation Analysis of Mangroves Ecosystem and Communities, held in Hanoi and Nam Dinh, 4-8 December 2006. The workshop focused on developing the knowledge and skills of the VNU team in Sustainable Livelihoods Analysis through the application of Participatory Rural Appraisal (PRA) techniques. The workshops were funded under the European Union Mangrove Project (2005-2008) in preparation for commencement of field-based activities and situation analysis.

In order to provide practical and effective technical guidance for shrimp hatchery management, it is necessary to establish a set of better management practices (BMPs) which underpin an effective hatchery production system. This document is not a complete manual on the management of P. monodon hatcheries but concentrates on the implementation of BMPs for the hatchery covering all of the critical stages and processes in the production cycle, which are currently believed to be causing problems in Vietnamese hatcheries. 

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

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.