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.
Golden Otocinclus (Otocinclus affinis) is a fish native to the Rio de Janeiro and São Paulo states in southeastern Brazil. O. affinis is mainly nocturnal and is known to feed on algae in its native range. The species is present in the aquarium trade. The history of invasiveness is No Known Nonnative Population. It has not been reported outside of its native range and there was no information available regarding the volume and duration of trade in the species. The climate match for the contiguous United States was medium. Most of the contiguous United States had a low climate match except the southeast and Gulf coasts which had areas of medium match with areas of high match in Florida, Louisiana, and Texas. The certainty of assessment is low due to lack of information. The overall risk assessment category for Otocinclus affinis is Uncertain.