Invasive Species Ireland

Alligator weed

Alternanthera philoxeroides

Status:

Potential

Habitat:

Freshwater

Threats:

Chokes up riverine habitats when it becomes established

Find out more ›

Brown Bullhead Catfish

Ameiurus nebulosus

Status:

Potential

Habitat:

Freshwater

Threats:

Negative impacts on native fish species.

Find out more ›

Chinese mitten crab

Eriocheir sinensis

Status:

Potential

Habitat:

Freshwater

Threats:

Threatens ecosystem functioning and protected species.

Find out more ›

Fanwort

Cabomba caroliniana

Status:

Potential

Habitat:

Freshwater

Threats:

Competition with native species. Clogging of waterways. EU Species of Union Concern

Find out more ›

Fishhook waterflea

Cercopagis pengoi

Status:

Potential

Habitat:

Freshwater

Threats:

Competiton with native invertebrates. Negative impacts on native fish.

Find out more ›

Gyrodactylus salaris

Status:

Potential

Habitat:

Freshwater

Threats:

Serious negative impacts on salmonid stocks.

Find out more ›

North American Signal Crayfish

Pacifastacus leniusculus

Status:

Potential

Habitat:

Freshwater

Threats:

Detrimental impacts on white clawed crayfish. Human health impacts.

Find out more ›

Quagga mussel

Dreissena bugensis

Status:

Potential

Habitat:

Freshwater

Threats:

Fouling, negative impacts on native species and local extinction of unionids.

Find out more ›

Ruffe

Gymnocephalus cernuus

Status:

Potential

Habitat:

Freshwater

Threats:

Negative impacts on native fish communities.

Find out more ›