Nansenia (fish)

Nansenia is a genus of pencil smelts.

Species
There are currently 18 recognized species in this genus:
 * Nansenia ahlstromi Kawaguchi & J. L. Butler, 1984
 * Nansenia antarctica Kawaguchi & J. L. Butler, 1984
 * Nansenia ardesiaca D. S. Jordan & W. F. Thompson, 1914 (Robust smallmouth)
 * Nansenia atlantica Blache & Rossignol, 1962
 * Nansenia boreacrassicauda J. Y. Poulsen, 2015 (Northern fat-tail pencil smelt)
 * Nansenia candida Cohen, 1958 (Blue-throat argentine)
 * Nansenia crassa Lavenberg, 1965 (Stout argentine)
 * Nansenia groenlandica (J. C. H. Reinhardt, 1840) (Greenland argentine)
 * Nansenia iberica Matallanas, 1985
 * Nansenia indica Kobyliansky, 1992
 * Nansenia longicauda Kawaguchi & J. L. Butler, 1984
 * Nansenia macrolepis (Gilchrist, 1922)
 * Nansenia megalopa Kawaguchi & J. L. Butler, 1984
 * Nansenia oblita (Facciolà, 1887) (forgotten argentine, Mediterranean large-eyed argentine)
 * Nansenia obscura Kobyliansky & S. G. Usachev, 1992
 * Nansenia pelagica Kawaguchi & J. L. Butler, 1984
 * Nansenia tenera Kawaguchi & J. L. Butler, 1984
 * Nansenia tenuicauda Kawaguchi & J. L. Butler, 1984