Researchers have described a new species of fish from the northern Red Sea, found at the entrance to a cave on a steep reef slope. Charon's pygmygoby (Trimma charon) is a small, translucent fish with a broad orange-red stripe, golden spots on its tail and an unusual four-part eye. The two known specimens measure just 12 and 17 millimeters (0.47 and 0.67 inches).