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.
Platytropius siamensis is a freshwater catfish endemic to two river basins in Thailand. This species has not been found in the wild since 1977, and is believed to be extinct. The history of invasiveness for this species is classified as No Known Nonnative Population. While one introduction to Florida was reported, it is now regarded as a misidentification. There were no confirmed records of introductions. The climate match for the contiguous United States was low. There were two small areas of medium match in southern Florida and Texas. The certainty of assessment is low due to lack of information regarding the history of introduction. The overall risk assessment for Platytropius siamensis is uncertain.