Two-Spot Goby: Vulnerable East Asian Freshwater Fish

The two-spot goby (Rhinogobius duospilus) is a small freshwater fish species belonging to the family Gobiidae. It is native to East Asia, primarily found in China, Korea, and Japan. As its common name suggests, the species is characterized by two distinct black spots on its dorsal fin. The two-spot goby prefers clear, cold streams with rocky or sandy bottoms, where it feeds on insects, crustaceans, and other small aquatic organisms. It has a limited distribution and faces threats from habitat loss and degradation, leading to its categorization as vulnerable by the IUCN Red List.