Ecological Risk Screening Summary - Acheilognathus macropterus (a fish, no common name) - Uncertain Risk

Acheilognathus macropterus is a small omnivorous cyprinid native to China, Korea, Vietnam, and southeastern Russia. This species is in the subfamily Acheilognathinae, commonly referred to as the bitterlings, and is occasionally found in the pet trade in countries such as the United Kingdom. It is also sometimes a part of local subsistence fisheries. A. macropterus is restricted via an Invasive Species Act in at least one prefecture in Japan, after it has become established in two lakes there. There are established populations in two lakes in Japan but the available information regarding impacts has been either indicates no impact or does not have any scientifically defensible supporting information. Therefore the history of invasiveness is classified as Data Deficient. The overall climate match for Acheilognathus macropterus in the contiguous United States is High. The areas of highest match were found in Florida and the upper Midwest and Great Plains states. The available information on range, biology, and non-native populations is sufficient, but there is conflict and unsupported claims in the impact information, resulting in a medium certainty of assessment. Based on the history of invasiveness of Data Deficient and High overall climate match, the overall risk assessment category for Acheilognathus macropterus is Uncertain.