Tilapia Farming Proposal Sparks Debate Over Environmental Risks at Itaipu Reservoir

BRAZIL
Friday, January 30, 2026, 06:00 (GMT + 9)

While Itaipu Binacional argues that fish farming can coexist with energy generation and environmental safeguards, researchers warn that the activity could intensify the spread of invasive species such as the golden mussel in Lake Itaipu. Tilapia farming in the Itaipu reservoir is not expected to affect energy generation, according to Itaipu Binacional, which manages one of Brazil’s main hydroelectric plants. The company notes that the 1,350 square kilometer reservoir already supports multiple uses beyond electricity production, including water storage, sedimentation control, commercial activities, and the sustenance of local fauna. Photo: Itaipu Binational

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