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Exotic species - Shanmugam IAS academy in coimbatore
Exotic species


What’s in news?

A special drive was launched to destroy the cultivation centres of the exotic Thai Mangur fish.

Key data’s:

  • Launched in: The drive to destroy the cultivation of the exotic species was launched by Maharashtra.
  • The decision is the outcome of a meeting held between fish traders and officials of the Maharashtra fisheries department.
  • Reason for the ban: Following are the reasons to ban the fish;
    • The fish is cultivating in the unhygienic conditions – when the people consume the fish or the water where it grows, they fell sick.
    • It is said to be carcinogenic to consume and it affects the bio-diversity.
    • It preys on indigenous varieties of fish – which may lead in decline of indigenous population.
  • Previous ban: The sale and cultivation of the fish was banned previously by the National Green Tribunal in 2000 and again it was banned in January 2019 – but it was not implemented effectively.
  • So far: The state government of Maharashtra has destroyed stocks of 57 tonnes in total in various places across the state.

About Thai Mangur:

  • Other names: The exotic species Thai mangur was also known as African Mangur or foreign Mangur – they called so because of its appearances is somewhat like fresh water Mangur.
  • IUCN Status: Least Concern.
  • Habitat: The fish normally lives on in slow-moving and often stagnant waters in ponds, swamps, streams and rivers, flooded rice paddies or temporary pools which may dry up. 
  • With the recent study, the Mangur fish is responsible for 70% decline in native fish species of the country.
  • Prey on: The fish prey on all form of life found in the inland waters except crocodiles.
  • Length: They can grow up to 3 to 5 feet.
  • They cultivate in unhygienic conditions by feeding the rotten meat with spinach which pollutes the water body.
  • Introduced in India: The fish was introduced in India by 1990’s and it was promoted by the government officials due to few advantages;
    • They can cultivate in inland waterways
    • They can yield high income with low investments.
  • It is popular because, it is an omnivorous diet, burrowing capabilities, ability to survive on land and ability to hide in vegetation make the species easy and economical for farming.

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