Monoporeia affinis, formerly referred to as Pontoporeia affinis (Greek: Πόντος, póntos = Pontus / Black Sea; πορεία, poreía = to travel), is a small, yellowish benthic amphipod living in the Baltic Sea, the Arctic Sea and the lakes of the Nordic Countries.
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0