Nerpa
The Nerpa is the world's only freshwater seal. They are found only in Lake Baikal. Nerpas are the apex predator of the lake, they have no natural predators. They mainly eat fish like the Omul and Golomyanka, but will also eater larger fish. They are not considered endangered, however they are at a Least Concern level on the IUCN Red List, meaning their numbers could drop dramatically in a short period of time. The Nerpa is closely related to the Arctic Ringed Seal, along with the Caspian Seal.
Omul
Omul are an endemic species of Whitefish in Lake Baikal. Omul are abundant in Lake Baikal, and are a main source of food for both Nerpa seals and people living nearby.
Golomyanka
The Golomyanka, or Baikal Oilfish, is an extremely strange fish. 30% of it's body is composed of oils, giving it a transparent appearance, The Golomyanka is also strange in that it lacks a swim bladder, which allows it to survive in the extreme depths of Lake Baikal. Perhaps the strangest thing about the Omul is that it melts in direct sunlight, due to it's high oil content. The people living near the lake used to go collect the slime of the beach after a storm and use it in various remedies. It is an incredibly unique animal.
Baikal Sturgeon
The Baikal Sturgeon is one of the oldest organisms in the lake, as well as one of the largest. Sadly, recent overfishing has lead to a decline in their numbers, and the IUCN Red List currently categorized as endangered, due to their low numbers, and artificial spawning programs have been put into effect.
SIBERIAN TAMEN
The Siberian Taimen is the world's largest species of salmon, . It is a popular fish for catching, due to it's size. It is currently categorized by the IUCN Red List as Vulnerable, and their numbers are steadily declining due to overfishing, pollution, and logging in their habitat.