The aquarium located inside the Eastwood Mall in Niles is currently closed off to the public after a tank malfunction caused the death of one of its fish. 

Mall officials said one of its sharks died after one of the tank's filtration systems created an imbalance in the water and restricted oxygen flow to the animals. 

The distressed fish were moved to other tanks to be closely monitored and a barrier was placed over the aquarium. 

Mall officials said the tank is being fixed, but there is no word on when the aquarium will be viewable again to the public.