A STATE Government competition to raise awareness of the harm caused by fish dumping was won by students at Willetton Senior High School.
The video competition for high school students, run by the Department of Parks and Wildlife and Department of Fisheries, challenged students to highlight the risks.
Dumping ornamental fish is a threat to the environment.
Plants from pet aquariums choke waterways and tank water spreads disease.
More than 70 entries from 20 schools were received, each with a unique take on the project to protect waterways.
WSHS students were presented with a certificate by Minister for Fisheries Ken Baston during a river cruise on the Swan and Canning rivers last week.
“I want to congratulate all the schools which took part for their enthusiasm in wanting to protect our rivers and in raising awareness about the potential impacts of dumping non-native species in our waterways,” Mr Baston said.