Biologists race to save fish from Brazil river contaminated by dam collapse

So-called Operation Noah's Ark aims to relocate aquatic life from Doce river by moving fish in tanks provided by mining company Samarco to area lakes

Teams of biologists are rushing to rescue fish from a river that was contaminated after two dams at an iron ore mine in Brazil collapsed earlier this month, unleashing a deadly wave of mud.

Mining company Samarco said in a statement that it was providing logistical support to the so-called Operation Noah's Ark effort aimed at saving aquatic life from the now-turbid waters of the Doce river. Experts have warned that the ecological harm caused by the 5 November breaches could last a generation.