THE XERCES SOCIETY FOR INVERTEBRATE CONSERVATION

Aquatic Invertebrates in Pacific Northwest Freshwater Wetlands
An Identification Guide and Educational Resource

Corophium (family Corophiidae) are unique amphipods whose second antennae are dramatically modified into long, leg-like appendages. They are longer in males than in females. Corophium are mostly collected near the saltwater/freshwater interfaces that are directly affected by ocean tides. However, they have been collected in the Snake River, far away from saltwater influence.