15784 Gymnogobius macrognathos Gymac_m0.jpg http://www.fishbase.org/images/species/Gymac_m0.jpg http://www.fishbase.org/images/thumbnails/jpg/tn_Gymac_m0.jpg Kim, I.-S. Gymac_f0.jpg http://www.fishbase.org/images/species/Gymac_f0.jpg http://www.fishbase.org/images/thumbnails/jpg/tn_Gymac_f0.jpg Kim, I.-S. Gymac_u0.gif http://www.fishbase.org/images/species/Gymac_u0.gif http://www.fishbase.org/images/thumbnails/gif/tn_Gymac_u0.gif Kim, I.-S.