Invasive Species Northern Ireland

Northern Snakehead

Channa argus

Status:

Potential

Habitat:

Freshwater

Threats:

Predation of native fish stocks, vector for disease and parasites

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Northern weatherfish

Misgurnus bipartitus

Status:

Potential

Habitat:

Freshwater

Threats:

The species threatens native wetland fish by spreading quickly and outcompeting them for food and habitat.

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Oriental Weatherloach

Misgurnus anguillicaudatus

Status:

Potential

Habitat:

Freshwater

Threats:

Competes with native fish for food, habitat, and spawning sites. Can carry parasites and viruses that impact native species.

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Pacific Pink Humpback Salmon

Oncorhynchus gorbuscha

Status:

Potential

Habitat:

Freshwater

Threats:

Has a high reproductive rate. May predate on native plankton, crustaceans and smaller fish.

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Pumpkinseed

Lepomis gibbosus

Status:

Potential

Habitat:

Freshwater

Threats:

Highly adaptable to different environments. Fast growing ang high reproductive capacity. Has a broad diet.

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Red swamp crayfish

Procambarus clarkii

Status:

Potential

Habitat:

Freshwater

Threats:

Outcompetes the native European crayfish. Degrades riverbanks through burrowing

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Ruffe

Gymnocephalus cernuus

Status:

Potential

Habitat:

Freshwater

Threats:

Negative impacts on native fish communities.

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Rusty Crayfish

Faxonius rusticus

Status:

Potential

Habitat:

Freshwater

Threats:

Outcompete native crayfish for food and resources, reduce aquatic vegetation cover

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Salvinia moss

Salvinia molesta

Status:

Potential

Habitat:

Freshwater

Threats:

Grows rapidly. Spreads vegetatively. May smother out other plants.

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