Aquatic pests

Aquatic pests are not native to Australia and can disrupt the natural balance of our environment.

These species are found in freshwater, estuaries, and marine areas. They include:

• fish – particularly noxious species
• plants – such as introduced seaweed
• animals – crabs, molluscs, invertebrates.

There are several species that cannot be held, traded, moved, or released into state waters. Discover the aquatic pests of most concern to SA.

Damage and prevention

Once transported to a new area, aquatic pests can spread rapidly. They must be quickly detected and contained to prevent:

• competition with native species that are important to our economy and conservation
• ruining aquatic areas, recreation, and tourism opportunities
• damage to fisheries, aquaculture, industrial infrastructure, and aquatic equipment
• serious health risks and potential diseases.

Learn how to manage aquatic pests to stop them establishing or spreading.

If you see an unusual freshwater or marine creature, report it immediately.

Search aquatic pests

Find marine pest locations and data using the National Introduced Marine Pest Information System.

More information

• Australian Government Marine Pests
• PestSmart
• National Carp Control Plan