A mislabeled chemical container has been accounted for the death of 389 fish at the Texas State Aquarium. The deaths happened on April 14 when staff was treating the tank system for a parasite using a chemical. The aquarium's Facebook page on Tuesday posted that staff members mistook the poisonous chemical hydroquinine as an anti-parasite drug trichlorfon.

Hydroquinine is used in film processing, cosmetics and as a stabilizer in paint and motor fuels. They discovered that the chemical had an adverse effect on the animals and killed a total of 389 fish, including sharks.

In Tuesday's news conference, Aquarium's CEO Tom Schmid said the hydroquinine should not have been shipped to the aquarium in the first place. This led to mislabeling of the container. Schmid said, "Somehow during the potentially manufacturing process, or some point in time, that container of medicine was incorrectly mislabeled".

The investigation revealed that the actual product that used was an isomer of hydroquinine, which is a known blood poison. Officials said they have sent more samples to a lab for further verification.

Staff members are now currently cleaning all of the impacted tanks to remove any trace of the toxin. The aquarium has received help by some aquariums and zoos, which have offered to send animals to help the rebuild the aquarium's collection.

Schmid mentioned that a fund has been established recover the aquarium. Orion Drilling CEO Wayne Squires has pledged to match all donations up to $50,000.

The aquarium officials hope that they will add a new fish tank system once the water is safe. This would likely happen by the end of the week.