| Citation | Nielsen, J.G., 2007, Grammonus yunokawai (Ophidiiformes: Bythitidae), a new marine cave fish from the Ryukyu Islands.. Ichthyol. Res. 54(4):374-379. |
| Ref. | 75999 Nielsen, J.G., 2007 |
| Page | 374;fig.1-4,5A |
| Named Used as Valid | Grammonus yunokawai |
| Comment | |
| Locality | cave at 20 m depth in dropoff, diving point Ohaba No. 1, NE coast of Ie-shima Island, Okinawa, Ryukyu Islands, Japan. |
| Distribution | Known only from its type locality. |
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