Navigobius dewa is a species of dartfish native to the western Pacific Ocean where it is only known from the waters around southern Japan. This species grows to a length of SL.Hoese, D.F. & Motomura, H. (2009): Descriptions of two new genera and species of pterelotrine fishes from Australia and Japan (Teleostei: Gobioidei) with discussion of possible relationships. Zootaxa, 2312: 49–59.
Etymology The fish is named in honor of Shin-ichi Dewa of Kagoshima, Japan, who collected the type specimen.
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