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Brackish Water Giant Clam Culture (Tridacna spp.)

Culture Methods

  • Seed Collection: Hatchery-produced juveniles or wild spat
  • Ocean Nursery: Suspended mesh cages in sheltered lagoons
  • Bottom Culture: Clams placed directly on sandy substrate
  • Stocking Density: 50-80 clams/m² (juveniles)

Environmental Requirements

ParameterOptimal Range
Salinity20-30 ppt
Temperature26-30°C
Water Depth1-5 m
Light PenetrationHigh, clear water for zooxanthellae photosynthesis

Production Cycle

  • Nursery Phase: 6-12 months until shell length reaches 5-8 cm
  • Grow-out Phase: 3-5 years to market size (15-20 cm)
  • Survival Rate: 80-90% under optimal care
  • Harvest Size: 500-1500g live weight

Post-Harvest Processing

  1. Harvest by hand to avoid shell damage
  2. Cleaning of shell and mantle
  3. Meat extraction for food markets
  4. Shell polishing for ornamental trade
Giant Clam Resources
Hatchery Manual Clam Nutrition Conservation Guidelines
Market Prices

Edible Meat: ₹500-900/kg

Ornamental Shells: ₹1000-3000/shell

Export Potential: Aquarium trade, seafood markets in Asia & Pacific

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