The tubenose goby is a small fish species belonging to the family Gobiidae. It is typically found in brackish and freshwater environments, particularly in the Black Sea and Caspian Sea regions. This fish is characterized by its elongated body and distinctive tubular nostrils, which give it its name. Tubenose gobies are known for their ability to adapt to various habitats, including rivers, lakes, and coastal areas. They primarily feed on small invertebrates and play a role in the ecosystem as both predator and prey. Their presence can indicate changes in water quality and habitat conditions.