A genus is a low-level taxonomic rank used in the classification of living and fossil organisms. The taxonomic ranks are domain , kingdom , phylum, class , order , family , genus, and species.... of large sturgeons. It contains two species:
The beluga or European sturgeon is a species of anadromous fish in the sturgeon family of order Acipenseriformes. It is found primarily in the Caspian Sea and Black Sea basins, and occasionally in the Adriatic Sea.... , Huso huso.
The Kaluga is a large predatory sturgeon found in the Amur River basin. Also known as the Great Siberian Sturgeon, they are claimed to be the largest freshwater fish in the world, with a maximum weight of at least 1000 kg.... , Huso dauricus.
