(Dreissena polymorpha)

Zebra mussels have disrupted the traditional aquatic food chains of many inland lakes. Their voracious filter feeding depletes the availability of microscopic organisms that play a critical part in each lake’s ecological food web.

(Potamopyrgus antipodarum)

(Carcinus maenas)

Native distribution is along the coasts of the North and Baltic Seas. Potential competitors for the food sources of native fish and bird species.

(Eriocheir sinensis)

Poses a potential threat to native invertebrates and to the ecological structure of freshwater and brackish estuarine communities

(Salmo salar)

Introduced through planned and unplanned escapes from fish farms

(Caulerpa Taxifolia)

Nicknamed “killer algae”, part of this species success as an invader in non-native habitats is the lack of natural predators. Predation by herbivorous fish and invertebrates is an important controlling factor in the ecology of this alga. C. taxifolia grows unchecked in environments with no natural predators.

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