Invasive Species Northern Ireland

Water hyacinth

Pontederia 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

Western Mosquitofish

Gambusia affinis

Status:

Potential

Habitat:

Freshwater

Threats:

Attacks native fish species, consumes the eggs of commercially important fish, potential to transmit parasites to native fish

Zander

Stizostedion lucioperca

Status:

Potential

Habitat:

Freshwater

Threats:

Competes with native fish species. Transmits fish disease and parasites.