The aquaculture group is claiming A$1.5 million in damages after 60,000 fish died during the trial.
According to ABC, the Tassal Group has lodged a writ over the alleged loss of fish in a research trial.
In a statement of claim lodged in the Supreme Court, Tassal says it agreed to let the university use some of its salmon in a field trial in December 2005.
The trial involved using a substance called Chloramine T to treat amoebic gill disease, ABC reports.
Tassal alleges more than 60,000 fish died due to an overdose caused by the negligence of the university and its agents.
Aquaculture Group to Sue University
AUSTRALIA - The Tassal Group is suing the University of Tasmania over alleged negligence during a field trial in 2005.