Spiny-cheek crayfish
Orconectes limosus
Status:
Potential
Habitat:
Freshwater
Threats:
Threat to the native European crayfish
Striped eel catfish
Plotosus lineatus
Status:
Potential
Habitat:
Marine
Threats:
Outcompetes and predates on native species
Topmouth gudgeon
Pseudorasbora parva
Status:
Potential
Habitat:
Freshwater
Threats:
Negative impacts on native fish and vegetation species.
Tree-of-heaven
Ailanthus altissima
Status:
Potential
Habitat:
Terrestrial
Threats:
Highly adaptable. Can outcompete native species
Vine-like fern
Lygodium japonicum
Status:
Potential
Habitat:
Terrestrial
Threats:
Outcompetes native species.
Virile crayfish
Orconectes virilis
Status:
Potential
Habitat:
Freshwater
Threats:
Predation of native species leading to disruption of habitats
Water hyacinth
Eichhornia crassipes
Status:
Potential
Habitat:
Freshwater
Threats:
Likely to have a significant adverse impact on biodiversity or the related ecosystem services
Water lettuce
Pistia stratiotes
Status:
Potential
Habitat:
Freshwater
Threats:
Alters habitats. Creates single species matts. Crowds out native species.
Water primrose
Ludwigia grandiflora
Status:
Potential
Habitat:
Freshwater
Threats:
Choke waterways and competing with native species
Invasive Species Ireland

Invasive Species Ireland