Giant Tiger Prawn (Penaeus monodon)

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March 24, 2025
Flora & Fauna
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🍀 Giant Tiger Prawn (Penaeus monodon) – The Black-Gold of the Sundarbans Estuaries

The Giant Tiger Prawn, scientifically known as Penaeus monodon, is a large, commercially prized shrimp species found in the brackish waters of the Sundarbans delta. Known for its bold stripes, impressive size, and high export value, it plays a significant role in the local economy, aquaculture, and estuarine food chain. Nicknamed the β€œBlack Tiger Shrimp”, it’s a star species in Bengal’s fisheries and global seafood markets.

🏷 Taxonomy

  • Kingdom: Animalia

  • Phylum: Arthropoda

  • Subphylum: Crustacea

  • Class: Malacostraca

  • Order: Decapoda

  • Family: Penaeidae

  • Genus: Penaeus

  • Species: P. monodon

🌊 A native of Indo-Pacific estuaries, it has become one of the most cultured and economically important prawns in the world.

πŸ”¬ Morphology & Physical Features

  • Size: One of the largest shrimp species β€” can grow up to 35 cm and weigh over 250 grams.

  • Coloration:

    • Distinctive dark greyish to bluish body with transverse black tiger-like stripes on the abdomen and tail.

    • Legs may be reddish or white.

  • Body Structure:

    • Hard exoskeleton, segmented body, long antennae, and fan-shaped tail.

    • Five pairs of swimming legs and powerful swimmerets.

🌍 Habitat & Distribution

The Giant Tiger Prawn is native to tropical and subtropical coastal regions, especially in:

🌎 Key Areas:
βœ… Sundarbans (India & Bangladesh) – Found in brackish tidal waters, river mouths, and shrimp farms.
βœ… Coastal Asia (India, Thailand, Vietnam, Indonesia, Philippines).
βœ… Now cultured worldwide β€” in Africa, Australia, and Latin America.

πŸ“Œ Preferred Habitat:

  • Brackish estuaries, tidal creeks, mangrove swamps.

  • Juveniles prefer shallow, muddy-bottomed zones; adults migrate offshore to breed.

  • Thrive in water salinity ranging from 10 to 30 ppt.

πŸ” Life Cycle & Breeding

  • Breeding: Occurs in offshore marine waters, typically during warmer months.

  • Spawning: Females lay up to 500,000 to 1 million eggs.

  • Larval Stages: Hatch into nauplii β†’ protozoea β†’ mysis β†’ post-larvae.

  • Post-larvae settle in mangroves, creeks, and nursery grounds like the Sundarbans.

🧬 Life span: Typically 1.5 to 2 years in wild or aquaculture settings.

🌿 Ecological Role in the Sundarbans

The Giant Tiger Prawn is both a consumer and prey in the estuarine food web.

πŸ“Œ Ecological Importance:
1️⃣ Detritivore and predator – Feeds on algae, small crustaceans, mollusks, and detritus.
2️⃣ Nursery species – Juveniles are key food for fish, birds, and estuarine reptiles.
3️⃣ Ecosystem link – Connects mangrove creeks to deeper waters through its migration pattern.

πŸ’° Economic & Cultural Importance

  • πŸ’΅ β€œLiquid gold” of Sundarbans aquaculture – exported to Europe, the US, Middle East, and Japan.

  • πŸ§‘β€πŸŒΎ Cultured in β€˜Bheris’ or shrimp ponds in Gosaba, Basanti, Canning, and Kakdwip regions.

  • 🍽️ Culinary delicacy – Featured in prawn malai curry, grilled tiger shrimp, and spicy jhol.

πŸ“ˆ India is one of the world’s largest exporters of P. monodon, and the Sundarbans plays a key role.

⚠️ Threats & Conservation Concerns

🚨 Overharvesting of wild broodstock reduces genetic diversity.
🚨 Mangrove loss affects nursery habitats and breeding cycles.
🚨 Disease outbreaks (like White Spot Syndrome) threaten both wild and farmed populations.
🚨 Pollution and antibiotic overuse in shrimp farms impact estuarine health.
🚨 Salinization from shrimp aquaculture harms rice cultivation in adjacent lands.

βœ… Sustainable Aquaculture Practices

βœ” Mangrove-integrated shrimp farming (ecological bheris) – combines prawn culture with mangrove conservation.
βœ” Regulated breeding programs for hatcheries.
βœ” Training local communities in disease management and biosecurity.
βœ” Use of native plant-based feeds and organic shrimp initiatives.

🚨 Conservation Status

πŸ“Œ IUCN Red List: Not Evaluated, but considered vulnerable to aquaculture stressors.
πŸ“Œ CITES: Not listed
πŸ“Œ Protected indirectly through mangrove habitat conservation in the Sundarbans Biosphere Reserve.

The Giant Tiger Prawn (Penaeus monodon) is a true treasure of the Sundarbans’ estuarine waters β€” sustaining economies, ecosystems, and cuisines. Its success, however, depends on sustainable aquaculture, mangrove conservation, and community stewardship. Protecting this prawn means preserving both livelihoods and landscapes across the delta. 🌊🦐🌿

🌟 Credit Note

🌿 Witness the aquaculture magic on a Sundarban private tour package with visits to prawn farms and local fisheries. πŸ›Άβœ¨
🌍 Choose an immersive Sundarban luxury tour to explore estuarine ecosystems and coastal livelihoods. 🐯🌾
🐟 Relish seasonal prawn dishes at the Sundarban Hilsa Festival 2025 🎣🍽

For more details, visit the Giant Tiger Prawn Wikipedia Page.