David Shale / Ventral view of Hatchet fish {Sternoptychidae / Argyropelecus hemigymnus} Atlantic

Georgette Douwma / Tropical reef fish composite image on black background, Kasmira snapper (Lutjanus kasmira), Greenthroat parrotfish (Scarus prasiognathos), Two spot wrasse (Oxycheilinus bimaculatus), Rusty parrotfish...