Based on the provided text, here is some information about different types of fish found in Lake Baikal:
Baikal Sculpin (Бычок-подкаменщик): A bottom-dwelling fish found near the shore, belonging to the sculpin family. They have a large, wide head, closely set eyes, and fan-shaped fins. During the breeding season, males display a bright yellow coloration. They typically hide under rocks or among aquatic plants.
Golomyanka (Голомянка): The most abundant and deepest-living fish in Lake Baikal. It is highly sensitive to water temperature, perishing at +10°C. Its body is transparent and mostly composed of fat, lacking scales. The text of a book can be read through its body. In Tibetan medicine, its fat is used to prepare remedies for wound healing. It is a viviparous fish and endemic to Lake Baikal.
Red Fish (Красная рыба): Its local name is associated with the red color of its flesh. It is found only in the northern part of Lake Baikal, near Frolikha Bay. The roe is red or yellowish and can be larger than 5 mm in diameter. It feeds on small fish and invertebrates. This species is listed in the Red Data Book of Russia and Buryatia.
Siberian Grayling (Хариус): This fish prefers cold water and becomes dormant at +15°C. It has two forms in Lake Baikal: lake and lake-river. Its coloration varies from marble to black depending on the color of the bottom, lighting, and water transparency. It spawns under the ice in winter. Its head resembles that of a frog, being wide and flattened with a small whisker on its chin.
Omul (Омуль): Some scientists believe that this fish entered Lake Baikal from the Arctic Ocean about 20,000 years ago. It migrates upstream to spawn. Its primary food is the epishura, a small crustacean, as well as plankton and young golomyanka. There are four races of omul in Baikal: Selenga, Posolsk, Chivyrkuy, and Barguzin. It is the most famous and commercially important fish in Lake Baikal.
Taimen (Таймень): The oldest, largest, and most fecund fish in Lake Baikal, capable of laying up to 400,000 eggs. It can weigh over 100 kg and live for 50-60 years. Its primary habitats are the Selenga delta, the mouths of certain rivers, and bays with depths of 20-50 m. The Buryats call it "helme." It is a rare species listed in the Red Data Book of Russia and Buryatia.
Soroga: Exists in two forms: small, found in sor (shallow bay), and large, found in Baikal itself. It typically lives in schools. Its scales have a pronounced silvery coloration. The iris of its eyes is yellow with a red spot. The dorsal fin and tail are reddish-brown. People call this fish soroga.
Il (Ил): People note the extraordinary beautiful attire of this fish: large golden-yellow scales, darker on the back with a bluish tinge, and lighter on the belly. It has a pair of barbels at the corners of its mouth. Fishermen value it for its exquisite meat flavor. Young shoots of reeds, the roe of spawning fish, mollusks, insect larvae, and worms are its usual food. With a decrease in temperature, it hibernates and stops feeding until the final opening of the ice. It is distinguished by rare longevity and can live up to 30 years. The name, translated from the Kazakh language, originated from the two words "il" and "animal."
Unspecified fish (Рыба без названия): This fish is considered one of the tastiest fish in Lake Baikal. It resembles the famous omul, and is often confused with it. It lives at depths of 20 to 200 m. It likes shallow water with sandy bottom. It spawns in autumn. It feeds on mollusks, plankton, insect larvae, worms, and the young of sculpin fish.
"Water Tiger" (Водяной тигр): Due to its strength, agility, and swift nature, this fish is called the "water tiger." It belongs to the salmon family. It can grow up to 140 cm and weigh from 30 to 60 kg. Its prey includes not only fish but also various animals such as ducks, waders, mice, and even muskrats. Its breeding plumage is distinguished by raspberry spots on the body and dark red fins.
Unspecified fish (Рыба без названия): One of the most colorful and beautiful fish in Lake Baikal. It has dense scales that shimmer with different colors and high, bright fins. It can be black or white. It spawns in spring and early summer. It migrates upstream to mountainous rivers with rocky bottoms, sometimes rising hundreds of kilometers.
Predatory Fish (Хищная рыба): The most voracious predatory fish in Lake Baikal. It camouflages well, waiting for its prey. Its diet includes small and large fish, mice, rats, frogs, and birds. It swallows its prey whole, headfirst. The fish has a streamlined body, painted in gray-green color with beige spots. The head is flat and wide with a huge, widely opened mouth. In fairy tales, it fulfills any desire.