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Dangerous migrants - marine species that are introduced into environments in which they do not occur naturally can become deadly pests and represent one of the greatest threats to the world's oceans and biodiversity.
This fact sheet identifies some of the species introduced into Western Australia, how they get here and their impact on our native marine environment.
Resource type: Fact SheetLast updated: 22.08.2019
Cobbler or catfish as they are known outside Western Australia, are 'endemic' to Australia, meaning they're only found here. They live in the southern half of the country, in coastal and estuarine waters up to about 30 metres deep.
Resource type: Fact SheetLast updated: 22.08.2019
The common blowfish or 'blowie', is abundant in estuaries and coastal waters throughout south-west Western Australia. While the blowfish will never win a popularity contest, it has an important role in marine ecosystems. The blowie is native to WA and keeps our waterways clean by eating waste scrap, bait and berley.
Resource type: Fact SheetLast updated: 22.08.2019
Black bream is one of the most important recreational and commercial fish species in the estuaries of south-Western Australia. A 'true' estuarine species, black bream complete their whole lifecycle within an estuary and are reliant on healthy rivers and estuaries for their survival.
To find out more, download this fact sheet.
Resource type: Fact SheetLast updated: 22.08.2019
Barramundi are a highly opportunistic species that dominate many tropical rivers. Delicious and thrilling to catch, they also live in both freshwater and saltwater, change sex and eat just about anything. Barramundi support substantial commercial, recreational and customary fisheries, as well as an aquaculture industry Australia-wide.
Resource type: Fact SheetLast updated: 22.08.2019
Barcheek coral trout are a long-lived and slow-growing fish found along the continental shelf between Ningaloo and the Northern Territory border. Since they inhabit inshore areas they are more vulnerable to overfishing and localised depletion than other coral trout species.
Resource type: Fact SheetLast updated: 22.08.2019
This fact sheet covers information on the biology and ecology of the Baldchin groper.
Resource type: Fact SheetLast updated: 22.08.2019
Australian herring are a popular species with a lifecycle dependent on prevailing currents.
Resource type: Fact SheetLast updated: 22.08.2019
Barracuda are pelagic fish, meaning they are found near the surface of the water, and are one of the fastest fish in the sea!
Resource type: Fun Fact SheetLast updated: 20.08.2019
I am a globefish. My name reflects my appearance, having a body that I can inflate.
Resource type: Fun Fact SheetLast updated: 20.08.2019
Out of the large trevally family, the most well-known is the Giant Trevally.
Resource type: Fun Fact SheetLast updated: 20.08.2019
Two species of mullet are found in the lagoon at Cocos (Keeling) Islands; diamond scale mullet and sea mullet.
Resource type: Fun Fact SheetLast updated: 20.08.2019
Mulloway is an aboriginal name meaning 'the greatest one' and growing to an impressive 30 kilograms, it's easy to see how they get their name.
Resource type: Fun Fact SheetLast updated: 20.08.2019
Flying fish are found in all of the oceans particularly in tropical and sub-tropical waters.
Resource type: Fun Fact SheetLast updated: 20.08.2019
Typically found in estuaries and coastal waters off Western Australia, flounder have an interesting life history.
Resource type: Fun Fact SheetLast updated: 20.08.2019
I am a type of catfish called an estuarine cobbler.
Resource type: Fun Fact SheetLast updated: 20.08.2019
Dogtooth tuna are not like other tunas; they are slow-moving demersal fish (bottom dwelling) and tend to stay in one area.
Resource type: Fun Fact SheetLast updated: 20.08.2019
Dhufish are endemic to Western Australia, meaning they are found no where else in the world.
Resource type: Fun Fact SheetLast updated: 20.08.2019
I am a predator species that lives on coral reefs.
Resource type: Fun Fact SheetLast updated: 20.08.2019
The inland waters of Western Australia are home to many species of native fish and crustaceans but are gradually being invaded by introduced species that don't occur naturally in our rivers and lakes. Learn more about aquatic invaders from this poster.
Resource type: PosterLast updated: 11.06.2019
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