Definition: Bathukolpian is a term in the Tungusic language spoken in Siberia and Mongolia. It refers to a type of fish that is commonly found in the rivers of these regions, but it is not actually a fish, but rather a type of freshwater fish known as "tubalik." The word bathukolpian comes from the Russian word "batyuk" which means "water," and "kolpo" which refers to a small fish.