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. This additional information will help inform decisions on where, when, and how the species may be used to minimize risks of them becoming invasive.
Chirostoma jordani is a silverside fish native to central Mexico. There is very little information available on this species, with only a standard length of 9.1 cm being published. This history of invasiveness is uncertain. According to Froese and Pauly (2019), this species was intentionally introduced into Texas but it failed to establish. The climate match for the contiguous United States was medium, with medium and high match being located in the southern portions of the Midwest, and along the southern border. Each state had an individually low climate score except California, which had a medium climate score, and Arizona, Florida, New Mexico, and Texas, which had high climate scores. The certainty of assessment is low. The overall risk category for Chirostoma jordani is uncertain.
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Uncertain Risk
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