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.
Bluegray Mbuna (Pseudotropheus johannii), is a freshwater cichlid native to Lake Malawi in Mozambique and Malawi. Pseudotropheus johannii is a popular aquarium fish. This species has been introduced outside of its native range, likely due to an aquarium release. P. johannii has been introduced and established in Hawaii, and has been collected in Nevada and the Philippines. No information has been reported on the impacts of introduction, thus the history of invasiveness is classified as “data deficient.” The climate match for the contiguous United States was 0.000, a low climate score. All individual states received low climate scores. The certainty of assessment is low. The overall risk assessment category for Pseudotropheus johannii is uncertain.