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Feral fish in the Swan and Canning rivers

New reports of pearl cichlids, a feral fish species (found in the Bennett Brook in March 2006) have surfaced, prompting surveys of the Swan River near Eden Hill and Caversham.

Subsequent surveys by researchers have not yet located any further samples, but the find has raised concerns that pearl cichlids may have already established in the Swan River. Pest fish species can cause damage to river health and degrade environmental systems. They can threaten biological diversity and cause losses to agriculture and aquaculture industries. The potential for aquarium and ornamental fish to become pests in the wild is considered extremely high.

The Swan River Trust reminds aquarium owners never to release exotic fish, algae or other aquatic life in the Swan and Canning rivers or their tributaries (this includes local lakes and drains). Be on the lookout for these introduced pests. Report their presence to the FISHWATCH service on 1800 815 507.

For more information, please contact the Trust or the Department of Fisheries.

Swan River Tributyltin sampling results

Results: Items 1 - 3 of 3

	Tributyltin and Heavy Metal Survey in the Swan River: Sediment and Mussel Tissue Quality The Swan River Trust commissioned Oceanica Consulting Pty Ltd to undertake a scientifically rigorous assessment of TBT (Tributyltin) and heavy metals adjacent to yacht clubs and marinas with slipping facilities along the Swan River, October 2007.

	Tributyltin and Heavy Metal Survey in the Swan River: Sediment and Mussel Tissue Quality - Community Summary Paper Summary Paper of Swan River TBT survey. Prepared for the Swan River Trust by Oceanica. November 2007

	Review of Oceanica Report Section on Tributyltin in Mussel flesh from Swan River Yacht Clubs Prepared for the Swan River Trust by Golder Associates, November 2007.

Archived Alerts

Results: Items 1 - 15 of 15

	Tributyltin and Heavy Metal Survey in the Swan River: Sediment and Mussel Tissue Quality Publish Date: 03-JAN-2008 03:42 PM The Swan River Trust commissioned Oceanica Consulting Pty Ltd to undertake a scientifically rigorous assessment of TBT (Tributyltin) and heavy metals adjacent to yacht clubs and marinas with slipping facilities along the Swan River, October 2007.

	Tributyltin and Heavy Metal Survey in the Swan River: Sediment and Mussel Tissue Quality - Community Summary Paper Publish Date: 03-JAN-2008 03:41 PM Summary Paper of Swan River TBT survey. Prepared for the Swan River Trust by Oceanica. November 2007

	Review of Oceanica Report Section on Tributyltin in Mussel flesh from Swan River Yacht Clubs Publish Date: 03-JAN-2008 03:40 PM Prepared for the Swan River Trust by Golder Associates, November 2007.

	Algal bloom subsides Publish Date: 17-OCT-2007 10:00 AM The non-toxic, red-tide algal bloom recently detected in the Swan River between the Swan Brewery and Mosman Park has subsided.

	Harmless algal bloom detected in Swan River Publish Date: 28-SEP-2007 06:10 PM A non-toxic algal bloom has been detected in the Swan River between the Swan Brewery and Mosman Bay today, after the Swan River Trust received a red-tide complaint from a member of the public.

	Trust investigating sewage spill into river at Mosman Park Publish Date: 22-MAY-2006 10:04 AM The Swan River Trust is investigating a sewage spill today into the Swan River at Saunders Street, Mosman Park.

	Oxygen levels improve in Swan River Publish Date: 13-APR-2006 01:13 PM Extra water quality testing carried out by the Swan River Trust has showed improved levels of oxygen in the Swan River between Bayswater and Midland.

	Low oxygen levels as bloom decomposes Publish Date: 07-APR-2006 04:31 PM Swan River Trust officers have collected hundreds of dead fish from the Garratt Road bridge in Bayswater to Bassendean today.

	Algal bloom affects fish in Swan River Publish Date: 05-APR-2006 04:31 PM The Swan River Trust has found more than 75 dead Bream and numerous small Gobies in the Swan River at several locations between Bayswater and Guildford.

	Swan River sampling returns healthy results Publish Date: 25-JAN-2006 02:50 PM The Swan River Trust's Incident Response Team is continuing to monitor the Swan Estuary following algal bloom alerts resulting from recent Wheatbelt rainfall.

	Trust continues to monitor river algal activity Publish Date: 20-JAN-2006 03:15 PM The Swan River Trust is continuing to monitor potential impacts for the Swan Estuary as a result of increased river flows from the Avon Catchment.

	Take care of the riverbanks on Australia Day Publish Date: 18-JAN-2006 02:42 PM Around 300,000 people will be heading to numerous spots along the Swan and Canning rivers this Australia Day to enjoy the celebrations.

	Trust continues to monitor flows into the Swan River Publish Date: 17-JAN-2006 08:11 AM The Swan River Trust’s Incident Response Team is monitoring the Swan Estuary to determine the potential impacts of high river flows from the Wheatbelt rains.

	Swan River Trust on algal bloom alert Publish Date: 13-JAN-2006 03:30 PM The Swan River Trust has been tracking information from the State Flood Warning Centre on the rainfall and flood situation due to the potential impacts of high flows through the Avon River on the Swan Estuary.

	High algae activity continues in lower Swan and Canning rivers Publish Date: 16-SEP-2005 04:23 PM Routine monitoring by the Swan River Trust has measured high levels of dinoflagellates over the last few weeks in the lower reaches of the Swan and Canning rivers.


	At times it is necessary to alert people to public health risks caused by algal blooms or pollution incidents. Only Swan River Trust-released statements are published on this website. Please see the Department of Environment and Department of Health websites for additional information. In recent years there have been algal blooms in the rivers. If there are high levels of potentially harmful algae, the Swan River Trust and Department of Environment notify the Department of Health, which in turn warns the public about the affected section of the river. The local government may erect warning signs on the foreshore. These alerts will also feature in the Trust’s weekly Algae Activity Report. Events such as the annual Skyshow may result in restricted access to parts of the river. For information about swimming in the Swan and Canning rivers please see the Environmental Health Directorate's Healthy Swimming website www.healthyswimming.health.wa.gov.au. Contact the Trust on (08) 9278 0900 or after hours on 0419 192 845 to report an algal bloom or river emergency.

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