Alligator weed
Alternanthera philoxeroides
Status:
Potential
Habitat:
Freshwater
Threats:
Chokes up riverine habitats when it becomes established
American bullfrog
Lithobates catesbeianus
Status:
Potential
Habitat:
Freshwater
Threats:
Can outcompete and displace native species. Spreads diesease.
Amur sleeper
Perccottus glenii
Status:
Potential
Habitat:
Freshwater
Threats:
Voracious predator of amphibians and fish. Outcompetes native species. Possible disease vector
Broadleaf watermilfoil
Myriophyllum heterophyllum
Status:
Potential
Habitat:
Freshwater
Threats:
It creates mats that impede the water flow and reduce sunlight and oxygen availability.
Brown bullhead catfish
Ameiurus nebulosus
Status:
Potential
Habitat:
Freshwater
Threats:
Negative impacts on native fish species.
Chinese mitten crab
Eriocheir sinensis
Status:
Potential
Habitat:
Freshwater
Threats:
Threatens ecosystem functioning and protected species.
Fanwort
Cabomba caroliniana
Status:
Potential
Habitat:
Freshwater
Threats:
Competition with native species. Clogging of waterways. EU Species of Union Concern
Fishhook waterflea
Cercopagis pengoi
Status:
Potential
Habitat:
Freshwater
Threats:
Competiton with native invertebrates. Negative impacts on native fish.
Floating primrose - willow
Ludwigia peploides
Status:
Potential
Habitat:
Freshwater
Threats:
Shades out native plants and changes water chemistry
Invasive Species Ireland

Invasive Species Ireland