Invasive Species Northern Ireland

Common Carp

Cyprinus carpio

Status:

Potential

Habitat:

Freshwater

Threats:

Alters habitat by consuming plants and invertebrates. Can impact water quality by increasing turbidity.

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Dace

Leuciscus leuciscus

Status:

Potential

Habitat:

Freshwater

Threats:

Negative impacts on native salmonids.

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Eastern mosquitofish

Gambusia holbrooki

Status:

Potential

Habitat:

Freshwater

Threats:

Competes with native fish for food, habitat and spawning areas and consumes their eggs leading to population declines

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Fanwort

Cabomba caroliniana

Status:

Potential

Habitat:

Freshwater

Threats:

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

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Fishhook waterflea

Cercopagis pengoi

Status:

Potential

Habitat:

Freshwater

Threats:

Competiton with native invertebrates. Negative impacts on native fish.

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Floating primrose - willow

Ludwigia peploides

Status:

Potential

Habitat:

Freshwater

Threats:

Shades out native plants and changes water chemistry

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Golden mussel

Limnoperna fortunei

Status:

Potential

Habitat:

Freshwater

Threats:

Fouls pipes, filters and intakes of water works. Colonises native bivalves and displaces native species. Increases algal blooms

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Gyrodactylus salaris

Status:

Potential

Habitat:

Freshwater

Threats:

Serious negative impacts on salmonid stocks.

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Killer shrimp

Dikerogammarus villosus

Status:

Potential

Habitat:

Freshwater

Threats:

Efficient predator. Adapatable to new freshwater systems. Highly mobile.

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