The Volga river is home to the world most important nesting grounds for water birds.The Beluga sturgeon is the largest fish found in the Volga. Below here is a picture of the Sturgeon fish. European catfish is the biggest predator of the Volga.It Grows up to 250pounds. Below there is a picture of the European catfish, among some more fishes that you can get in the Volga river such as: Russian "Gherekh",Corsar fish.