Paracetonurus flagellicaudaParacetonurus flagellicauda is a species of fish in the subfamily Macrourinae. Some sources place it in the genus Pseudonezumia.DescriptionParacetonurus flagellicauda has a slender body, tapering to a string-like tail. It is white with black markings. Its length is maximum.HabitatParacetonurus flagellicauda lives in the northeast Atlantic Ocean and southwest Indian Ocean, and is common in the Azores. It is bathydemersal, living at. The species may migrate along the mid-ocean ridges to travel between oceans.