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.
Hypostomus watwata, Armored Catfish, is native to coastal rivers in French Guiana, Suriname, and Guyana, occurring in fresh or brackish water at river mouths. The species is rare in the aquarium trade internationally. An established population of Hypostomus in Hawaii has been tentatively identified as H. watwata, but the identification has not been confirmed because of the difficulty of distinguishing between different Hypostomus species. Therefore, the history of invasiveness is No Known Nonnative Population. The climate match is low throughout the contiguous United States. The lack of species-specific biology, ecology, and introduction information leads to a low certainty of assessment. The overall risk assessment category for Hypostomus watwata is Uncertain.
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Uncertain Risk
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