This fish lives in the water bodies of the European Continent; it can also be found in South and East Asia. Loach prefers quiet rivers, silty and shady lakes. It is mainly active at night. It feeds on crustaceans, insect larvae and other fish's eggs. The loach has a long snake-like body covered with small scales. Its round fins are covered with small brown specks. The color of the fish depends on its environment. The average length of an adult fish is 15 - 20 cm. Some rare specimens can reach 35 cm in length.