Fish and Aquatic Conservation


Supporting Documents

Ecological Risk Screening Summaries (ERSS)

The Service has developed a process to efficiently characterize and prioritize the potential risk of invasiveness from species of wild animals and plants. The final output is a report for each species called an Ecological Risk Screening Summary (also referred to as an ERSS) that provides an estimated prediction of invasivenenss of that species and that can be used by the Service, its natural resource partners, and the public to help inform their decisionmaking.

Risk information is presented in the ERSSs. If you need assistance, please seek out professionals who are knowledgeable about the species and your particular situation. If further assessments are needed beyond the ERSS, we recommend relying on results from industry, State or Federal agencies, university researchers, and non-governmental organizations trained in invasive species risk assessment and risk analysis.

More information about the ERSSs can be found here:

Partnership for Prevention

The Service is working cooperatively with the Association of Fish and Wildlife Agencies and industries that trade in live animals. Many of these industries understand that some of their trade species have become, or have a high potential to become, injurious, and they do not want to perpetuate the problem.

Memorandum of Understanding between FWS, Association of Fish and Wildlife Agencies, and Pet Industry Joint Advisory Council (June 2013) (pdf)

Injurious Wildlife Listing

Injurious Wildlife Homepage

Injurious Wildlife Listing Criteria The criteria that the Service uses as a guide to evaluate whether a species does or does not qualify as injurious under the Lacey Act, 18 U.S.C. 42