Environment of Azerbaijan
The Caspian Sea is the largest lake on Earth by both area and volume, with a surface area of 371,000 square kilometres (143,244 mi²) and a volume of 78,200 cubic kilometres (18,761 mi³). It is a landlocked endorheic body of water and lies between Asia and Europe. It has a maximum depth of about . It is called a sea because when the Romans discovered it they tasted the water and found it to be salty. It has a salinity of approximately 1.2 percent, about a third the salinity of sea water.
Salmo ciscaucasicus
Salmo ciscaucasicus or the Caspian salmon is a salmonid fish endemic to the Caspian Sea and inflowing rivers . It was described in 1967 originally as a subspecies of "Salmo trutta". "S. ciscaucasicus" lives on the western shore of the lake from northern Azerbaijan to the Ural River, while the main breeding river is Terek. It lives at depths down to 50 metres. Males can reach a maximum standard length of 130 centimetres.