![](http://www.alamy.com/thumbs/6/E2DB6066-25E0-43F9-B9F5-8E1A0EBC3B9D/EWCA9W.jpg)
Sterlet (Acipenser ruthenus) at Frankfurt Zoo in Frankfurt am Main, Hesse, Germany.
Size: 5382px × 3588px
Photo credit: © Azoor Wildlife Photo / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: acipenser, acipenseridae, acipenseriformes, actinopterygii, animal, animals, aquarium, asia, asian, azov, black, caspian, danube, endangered, europe, european, fauna, fish, fishes, frankfurt, freshwater, garden, german, germany, hesse, lake, life, main, natural, nature, river, ruthenus, sea, sterlet, sterleth, sterlets, sturgeon, sturgeons, swim, swimming, underwater, volga, water, wild, wildlife, zoo, zoological