Aquatic pests and diseases references

Candidate Organisms

Differential Distribution (i.e. present on the mainland and not Torres Strait, present in PNG and not Torres Strait or limited distribution across Torres Strait islands (TSI) ).

National Significance

Invasive fresh water fish, including climbing perch (Anabas testudineus), snakehead (Channa spp.) and tilapia (Oreochromis mossambicus and Tilapia mariae)

Climbing perch present in PNG & on some TSI but absent from most others and the mainland.
Tilpia present on the mainland and some TSI.

Yes - on the interim national priority list of exotic environmental pests and diseases.
Climbing perch is a restricted noxious fish under the Biosecurity Act 2014. https://www.business.qld.gov.au/industries/farms-fishing-forestry/agriculture/land-management/health-pests-weeds-diseases/pests/invasive-animals/restricted/climbing-perch

Aquatic invasive plants e.g. Limnocharis (Limnocharis flava), water hyacinth (Eichhornia crassipes), salvinia (Salvinia molesta) and Amazonian frogbit (Limnobium laevigatum)


Northwards movement from mainland highly likely associated with installation of aquaria, ponds and hydroponic gardens. Limnocharis is an eradication target of the Tropical Weeds Eradication Program. The other species are widely available and 'mobile' despite salvinia and water hyacith being WONS and declared weeds. There are no regulatory controls currently in place to prevent the movement of Limnobium laevigatum Invasive snails and exotic fish can also be moved northwards via this 'pathway'.

Asian green mussel (Perna viridis)

Irregular detections in Australia not far from the region.

Yes - on the interim national priority list of exotic environmental pests and diseases. It is also on the The Australian Priority Marine Pest List https://www.marinepests.gov.au/what-we-do/apmpl

Harris' mud crab (Rhithropanopeus harrisii)

Absent from Australia.

https://www.marinepests.gov.au/pests/identify/harris-mud-crab



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