13917 Ophichthus frontalis Opfro_u0.jpg http://www.fishbase.org/images/species/Opfro_u0.jpg http://www.fishbase.org/images/thumbnails/jpg/tn_Opfro_u0.jpg Robertson, R. Opfro_u0.gif http://www.fishbase.org/images/species/Opfro_u0.gif http://www.fishbase.org/images/thumbnails/gif/tn_Opfro_u0.gif FAO Opfro_u1.gif http://www.fishbase.org/images/species/Opfro_u1.gif http://www.fishbase.org/images/thumbnails/gif/tn_Opfro_u1.gif McCosker & Rosenblatt, 1998 Opfro_u1.jpg http://www.fishbase.org/images/species/Opfro_u1.jpg http://www.fishbase.org/images/thumbnails/jpg/tn_Opfro_u1.jpg Robertson, R.