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Invasive snakehead fish in Sri Lanka’s Deduru Oya reservoir are harming native species and fishers’ livelihoods, prompting new efforts like angler tourism and food processing to manage their spread.
In Sri Lanka’s Deduru Oya reservoir, invasive snakehead fish have surged over the past two years, threatening native species and traditional fishing livelihoods.
Believed to have been released from ornamental tanks, the aggressive, air-breathing fish have no natural predators and now weigh up to 7 kilograms.
Fishers report sharp declines in prawn and native fish catches, with traditional nets ineffective.
While a prior fishing competition failed to curb numbers, locals are now promoting angler tourism and processing snakeheads into salted dried delicacies—gaining niche popularity—as sustainable ways to control the population and generate income.
Los peces con cabeza de serpiente invasores en el embalse Deduru Oya de Sri Lanka están dañando las especies nativas y los medios de vida de los pescadores, lo que ha provocado nuevos esfuerzos como el turismo de pesca y el procesamiento de alimentos para controlar su propagación.