Better management practices

Improved management practices to generate better crop outcomes, environmental performance and profitability through improved resource utilisation efficiency.

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A collection of subject tags relating to technical matters.

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Better practice guidelines: Spawn production in hatcheries

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

Policy brief: Development and management of aquaculture-based fisheries enhancements

This policy brief aims to promote better management of aquaculture-based fisheries enhancements (stocking of hatchery fish to improve fisheries) through integrated analysis of enhancement systems and quantitative assessment of management practices through use of the EnhanceFish decision tool.

Better practice guidelines: Fry production - nursing spawn

‘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’.

Better-practice guidelines: Fast fingerling production - nursing spawn in ponds

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.

Better practice guidelines: Fingerling production nursing fry in ponds

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.