Fish are still dying by the ton in a Rio de Janeiro lake that is slated to host Olympic rowing events, while city authorities and biologists are arguing about the cause of the die-off.
Rio’s Comlurb waste management company says it has collected more than 37 tons of dead fish from the Rodrigo de Freitas lake. Dozens of garbage collectors continued to rake fish corpses off the water’s surface on Thursday. Neighbors and passers-by complained about the overwhelming stench.
Such die-offs are common in Rio, where rivers, lakes and even the ocean are blighted by raw sewage and garbage.
Rio’s environmental secretariat has said the die-off resulted from a sudden change in water temperature. But scientists say pollution is really to blame.