Introduction
The Invasive Species Program has identified numerous actual and potential invasive species from which we strive to protect California’s wildlands and waterways. Many invaders have already established populations in various regions of California and occur in different stages of the invasion process. We aim to prevent the spread of these species by educating the public about the species, their impacts, how they spread, and how people can avoid spreading them. In addition, numerous other species that may already be invasive elsewhere in the U.S., but have not yet been introduced or established in California, have been identified as threats to the state’s environment, economy, agricultural interests, and/or human health. By educating the public about these species, their likely impacts, the pathways of introduction, and what to do if they are encountered, we aim to prevent introductions and intercept populations before they are able to establish, spread, and cause harm.
Click on the profiles below to learn about each species’ description, distribution, habitat preference, pathways of spread, impacts, and what to do if you find one. Please note: the list below is far from comprehensive, and we are constantly working to compile additional species fact sheets to add to the list below. If you are looking for information about an invasive species not listed below, email us at Invasives@wildlife.ca.gov.
Mammals
Birds
Reptiles
Amphibians
Fishes
Invertebrates
1 Restricted species are on CDFW’s List of Restricted Live Animals (California Code of Regulations Title 14, Section 671(opens in new tab)), and therefore may not be imported, transported, or possessed without a permit issued by CDFW. For more information on why these species are restricted, visit our Laws and Regulations page.