The Mirrored Hatchetfish
This fish’s flattened, silvery body resembles a hatchet blade when viewed from the side. Rows of light-producing photophores line its belly, matching the faint sunlight from above to hide its silhouette from predators below. Its upward-facing eyes constantly scan for prey silhouettes against the distant surface. When seen head-on, its ultra-thin profile makes it nearly invisible to predators.