eelblenny noun4 •Any fish of genus Lumpenus, resembling an eel, found in subarctic waters, especially Lumpenus sagitta and Lumpenus fabricii (slender eelblenny). •A carpet eel-blenny (Congrogadus subducens). •Certain fish of genus Notograptus. •Eel snake blenny (Peronedys anguillaris), of Australia formseelblennies