Sri Lanka tries to hook anglers on invasive fish species
Sri Lanka urged people on Saturday to catch and cook invasive fish species, including the giant snakehead and piranhas, that threaten fragile freshwater ecosystems and are now banned.
Introduced species, as a biological process, refers to the human-mediated translocation and establishment of organisms outside their native geographic ranges, thereby altering biotic community composition and ecosystem dynamics. This process involves transport (intentional or accidental), release or escape, survival, and reproduction in the recipient environment, often bypassing natural dispersal barriers. Once established, introduced species may undergo rapid ecological and evolutionary responses, including niche shifts, adaptation to novel conditions, and altered interaction networks (e.g., predation, competition, mutualism). The process of species introduction can drive changes in community structure, energy flow, and biogeochemical cycles, and in some cases leads to biological invasions with significant impacts on native biodiversity and ecosystem functioning.
Sri Lanka urged people on Saturday to catch and cook invasive fish species, including the giant snakehead and piranhas, that threaten fragile freshwater ecosystems and are now banned.
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