What is coreoperca kawamebari?

Coreoperca kawamebari, commonly known as the yellowfin goby or yellowfin sleeper goby, is a species of freshwater goby native to East Asia, particularly Japan and Korea. They are typically found in slow-moving streams and small rivers with sandy or rocky bottoms, as well as in irrigation canals and rice paddies.

Yellowfin gobies have a yellow or tan body with brown stripes along the sides and a black spot on the dorsal fin. They can grow up to 20 centimeters in length and prefer warm water temperatures between 20 and 28°C.

These gobies are primarily carnivorous and feed on small invertebrates such as aquatic insects, crustaceans, and small fish. They are considered important biological indicators of water quality in their native habitats.

Yellowfin gobies are sometimes kept as aquarium fish, but their specific water temperature and habitat requirements can make them challenging to keep in captivity. They also have a relatively short lifespan of about two to three years in the wild.