Marbled crayfish
Procambarus fallax f. virginalis
Status:
Potential
Habitat:
Freshwater
Threats:
Potential threat of native crayfish. Potential threat to wetlands by extensive burrowing activities.
North American signal crayfish
Pacifastacus leniusculus
Status:
Potential
Habitat:
Freshwater
Threats:
Detrimental impacts on white clawed crayfish. Human health impacts.
Northern Snakehead
Channa argus
Status:
Potential
Habitat:
Freshwater
Threats:
Predation of native fish stocks, vector for disease and parasites
Pacific or Pink humpback salmon
Oncorhynchus gorbuscha
Status:
Potential
Habitat:
Freshwater
Threats:
Has a high reproductive rate. May predate on native plankton, crustaceans and smaller fish.
Pumpkinseed
Lepomis gibbosus
Status:
Potential
Habitat:
Freshwater
Threats:
Highly adaptable to different environments. Fast growing ang high reproductive capacity. Has a broad diet.
Red swamp crayfish
Procambarus clarkii
Status:
Potential
Habitat:
Freshwater
Threats:
Outcompetes the native European crayfish. Degrades riverbanks through burrowing
Ruffe
Gymnocephalus cernuus
Status:
Potential
Habitat:
Freshwater
Threats:
Negative impacts on native fish communities.
Rusty Crayfish
Faxonius rusticus
Status:
Potential
Habitat:
Freshwater
Threats:
Outcompete native crayfish for food and resources, reduce aquatic vegetation cover
Salvinia moss
Salvinia molesta
Status:
Potential
Habitat:
Freshwater
Threats:
Grows rapidly. Spreads vegetatively. May smother out other plants.
Invasive Species Northern Ireland

Invasive Species Northern Ireland