More than 10,000 fish slated for an aquarium in Brazil perished in May and Brazilian investigators want to know why and how the fish died.
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The die off occurred as the fish were waiting for the completion of their permanent home in a $50 million aquarium in the city of Campo Grande. According to the BBC, the project overran its deadline and the fish, in temporary tanks, died. The company responsible for caring for the fish said that a drop in overnight temperatures in May killed the fish, but officials in Mato Grosso do Sul state said that the company failed to adequately care for the fish, and that there was evidence of inadequate oxygen in the tanks as well as the lack of cleaning of the tanks. The fish had come from Africa, Asia, and Oceania and should have been transferred to their permanent aquariums at least six months ago, officials said.
The aquarium is located near the Pantanal, the world’s largest freshwater wetland, and home to a variety of organisms.