Aquatic Nuisance Project
Fact Sheet

Species: Zebra Mussel


(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.

ANS Examples



(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.