Species that are considered uncertain risk need a more in-depth assessment beyond the Risk Summary to better define the species’ risk to U.S. environments.
Because of its monetary value, extensive information is available about the biology, life history, and trade history of Anguilla japonica. A. japonica has been introduced outside of its native range for aquaculture, although no established nonnative populations have been confirmed. The climate match for this species is only applicable to the phases of the lifecycle in fresh or brackish water. It is unknown whether A. japonica reproduction, which only occurs in marine environments, could be completed offshore of the United States. For this reason, the certainty of this assessment is medium.
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Uncertain Risk
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