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Scampi (Giant Prawn) Farming in Nagpur: Practical Step-by-Step Guide

A hands-on guide for growers in Nagpur to plan and run a scampi (Macrobrachium) farm. Covers soil and water checks, pond construction, seed sourcing, stocking, feeding, routine management and harvest.

Ranjeet Natarajan
Ranjeet Natarajan August 9, 2026 6 min read 1,163 words
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Scampi (Giant Prawn) Farming in Nagpur: Practical Step-by-Step Guide

Why consider scampi (giant prawn) farming in Nagpur?

Macrobrachium rosenbergii (commonly called scampi or giant freshwater prawn) adapts to warm inland conditions and can be grown in ponds, tanks or lined reservoirs. Nagpur offers a warm climate for much of the year; success depends on choosing the right site, managing water and feed, and preventing stress and disease.

Site and soil: what to check before you invest

Scampi need stable water and a pond bottom that supports natural productivity without leaching or contamination. Before you build:

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  • Check water source reliability: wells, borewells or surface water with sufficient quantity and acceptable quality year-round.
  • Test water quality: basic on-site tests for pH, salinity/conductivity and clarity; get a lab test for total hardness and contaminants if possible. Ideal pH is near neutral but they tolerate slightly alkaline water.
  • Assess soil type: clayey loam with some clay content is preferred because it retains water and supports natural food. Highly sandy soils will leak; organic soils can be manageable if properly lined.
  • Look up topography: level land reduces construction cost; avoid sites prone to flooding with contaminated runoff.

Pond design and construction

Ponds for scampi are usually shallow and have gentle slopes to help with harvesting and management. Consider these practical points:

  • Size: ponds can be small (0.05–0.5 ha) for pilot operations, or larger commercial units. Design should match your water supply and management capacity.
  • Depth: water depth commonly ranges from 0.8 to 1.2 m; a depth of around 1 m is a practical compromise for temperature stability and oxygenation.
  • Bank slope and bunds: gentle slopes (1:2 or 1:3) on the inside help feeding and harvesting. Bunds must be compacted and protected from erosion.
  • Lining: use compacted clay or HDPE lining if soil is porous. Lining reduces seepage and contamination risk.
  • Drainage and sluice gates: include an inlet and outlet with screens to prevent escape and entry of unwanted fauna. A drain in the deepest point makes harvesting and drying easier.
  • Shelter structures: scampi like structured habitat—provide bamboo or polyethylene pipes, brush, or coconut fronds to act as shelters; they reduce cannibalism and improve survival.

Water preparation and management

Good water management is one of the biggest determinants of success.

  • Fill and conditioning: after construction, fill ponds and allow 7–14 days for natural productivity to establish. Apply a safe organic manure (well-composted) or inorganic fertilizer in small doses to boost natural food, but avoid over-fertilization which depletes oxygen.
  • Aeration: in semi-intensive or intensive systems use aerators at night or during hot spells. Aeration prevents night-time oxygen crashes that cause mass mortality.
  • Routine checks: monitor temperature daily and dissolved oxygen preferably twice daily (morning and late afternoon). Also watch for pH shifts and turbidity changes.
  • Water exchange: minimize water exchange to keep planktonic food; use partial exchanges to correct quality issues. Keep incoming water screened and disinfected if possible.

Seed (PL) sourcing and stocking

Seed quality sets the baseline for growth and survival.

  • Sourcing: buy post-larvae (PL) from reputable hatcheries with traceable health and timely vaccination/treatment history. Transport PL in oxygenated bags and acclimatize them slowly when releasing into ponds.
  • Acclimatization: float the sealed bag in pond water, then gradually mix small volumes of pond water into the bag over 30–60 minutes before release.
  • Stocking density: choose density based on your management system. Low-density extensive systems use fewer PL per square meter; semi-intensive systems use higher densities but require aeration and more feed. Start modestly if you are new.
  • Timing: avoid stocking just before monsoon floods or extreme heat. Stable temperature windows reduce stress on PL.

Feeding and nutrition

Good feeding gives predictable growth and reduces cannibalism.

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  • Feed types: use commercially formulated prawn/pellet feeds appropriate for crustaceans. Begin with fine-size feed for small PL and move up particle size as prawns grow.
  • Feeding rates: feed according to expected biomass and feed conversion ratios provided by feed supplier. Monitor feed intake and adjust; overfeeding wastes money and degrades water quality.
  • Natural food: encourage natural productivity (plankton, benthic organisms) by managing fertilization and organic matter. Natural food can form a significant portion of diet in extensive systems.
  • Feeding schedule: multiple small feeds during daylight hours reduces competition and cannibalism; avoid heavy night feeding unless you have good aeration and monitoring in place.

Health management and common problems

Preventive management is more effective than treating outbreaks.

  • Quarantine: keep new PL and any incoming animals in quarantine if possible.
  • Water quality: many disease events start with poor water quality. Regular checks and maintaining oxygen and pH are critical.
  • Parasites and bacterial infections: maintain hygiene, avoid overstocking and sudden feed or temperature changes. Consult a local aquatic veterinarian for specific diagnoses and treatments—do not use antibiotics indiscriminately.
  • Cannibalism: provide shelters and manage size variation by grading or periodic harvesting to remove larger individuals.
  • Record keeping: track mortalities, growth rates, feed use and water parameters. Patterns will help you find and fix problems early.

Harvesting and post-harvest handling

Planned harvesting improves returns and reduces stress.

  • Partial harvests: harvest in batches as prawns reach marketable size to prevent dominance hierarchies and cannibalism.
  • Use of nets and drains: lower water level and use seine nets or drain ponds for an efficient harvest. Keep handling time short to avoid damage.
  • Post-harvest handling: quickly grade, wash in clean water, and ice or chill prawns for market. For live markets, maintain adequate oxygen and temperature control in transport tanks.
  • Record yields: measure average size and survival to refine future stocking and feed plans.

Economics, scale and practical tips

Start small and scale up once you have mastered local water and disease challenges.

  • Start with a pilot pond: run a single pond to learn local behaviour—growth rates, feed consumption and seasonal water changes—before expanding.
  • Local support: connect to regional aquaculture extension, local hatcheries and successful producers for practical advice and troubleshooting.
  • Record and review: keep simple daily logs for water quality, feeding and mortalities; review weekly to spot trends.
  • Legal and environmental: be aware of local water use rules and waste discharge requirements to avoid regulatory problems.

Seasonal considerations for Nagpur

Nagpur’s climate includes hot summers, a monsoon and mild winters. Practical responses:

  • Summer: monitor oxygen closely and use aeration during hot afternoons and nights. Provide shade around ponds where possible.
  • Monsoon: protect against contaminated runoff; ensure good bunds and functioning outlets. Avoid major stocking at the start of monsoon.
  • Winter: growth may slow; lower feeding rates accordingly and reduce aeration needs overnight if oxygen remains stable.

Final checklist before you begin

  • Reliable water source and basic water test results in hand.
  • Pond constructed with inlet/outlet, drain and shelter structures.
  • Seed supplier vetted and transport plans ready for short transit and acclimatization.
  • Feed supplier and aeration equipment arranged for the planned stocking density.
  • Record-keeping system and a plan for routine water and health checks.

Scampi farming can be profitable if you manage water quality, stock responsibly and prevent stress-related disease. Start small, learn your local pond dynamics through careful records, and expand once you’ve achieved consistent survival and growth.

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Ranjeet Natarajan
Ranjeet Natarajan

Contributing writer at Agriculture Novel — telling the stories that sustain us.

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