The Baikal seal, Lake Baikal seal or nerpa, is a species of earless seal endemic to Lake Baikal in Siberia, Russia. Like the Caspian seal, it is related to the Arctic ringed seal. The Baikal seal is one of the smallest true seals and the only exclusively freshwater pinniped species. A subpopulation of inland harbour seals living in the Hudson Bay region of Quebec, Canada, as well as the Saimaa ringed seal and the Ladoga seal, are also found in fresh water, but these seals are part of species that also have marine populations.
The Abyssocottinae are a subfamily of ray-finned fishes in the family Cottidae, the sculpins. They are known commonly as the deep-water sculpins. The entire family is endemic to Lake Baikal in Siberia.
The Siberian sturgeon is a species of sturgeon in the family Acipenseridae. It is most present in all of the major Siberian river basins that drain northward into the Kara, Laptev and East Siberian Seas, including the Ob, Yenisei Lena, and Kolyma Rivers. It is also found in Kazakhstan and China in the Irtysh River, a major tributary of the Ob. The species epithet honors the German Russian biologist Karl Ernst von Baer.
The Indonesian speckled catshark is a species of catshark in the genus Halaelurus. It is a tropical catshark found in the Pacific Ocean. It was named by W. T. White, P. R. Last, and J. D. Stevens in 2007. Male Halaelurus maculosus can reach a maximum length of 45.7 centimetres (18.0 in), while females can reach a maximum length of 52.8 centimetres (20.8 in). Catsharks in this species are occasionally caught by demersal fisheries.
Xenocypris yunnanensis, the Kunming nase, is a species of ray-finned fish in the genus Xenocypris. It is endemic to Lake Dianchi in Yunnan Province, China. The species started to decline in the 1970s and has not been caught in the lake after two specimens were collected in 1985; it may be extinct. Its demise is likely due to introduced fish species, grass carp. It was also impacted by over-fishing and pollution. They grow to a maximum length of 23 cm. They are dark grayish with a silvery white belly, gray dorsal fin, reddish anal fin and orange red caudal fin. They have a rounded belly, blunt snout, eyes on the lateral of their heads, small and transverse mouth.
Procottus is a genus of ray-finned fish belonging to the family Cottidae, the typical sculpins. These fishes are endemic to Lake Baikal in Russia.
Dmitrii Nikolaevich Taliev was a Soviet Russian ichthyologist and limnologist, notable for his work on the Lake Baikal.
The Gilbert's garden eel, also known as the Gilbert's conger and the sharpnose conger, is an eel in the family Congridae. It was described by James Douglas Ogilby in 1898, originally under the genus Congrellus. It is a tropical, marine eel which is known from the eastern central and southeastern Pacific Ocean, including the Gulf of California, Costa Rica, El Salvador, Ecuador, Guatemala, Mexico, Honduras, Nicaragua, Panama, and Colombia. It is a benthic and nocturnal species, and inhabits sand flats in reefs, bays and coves at a depth range of 1–100 metres. It burrows into sand during the day and emerges to forage during the night. Males can reach a maximum total length of 27 centimetres.
Gnathophis parini is an eel in the family Congridae. It was described by Emma Stanislavovna Karmovskaya in 1990. It is a marine, deep water-dwelling eel which is known from the Sala y Gomez Ridge, in the southeastern Pacific Ocean. It dwells at a depth range of 540–560 metres. The maximum known total length, based on a juvenile specimen, is 13.7 centimetres.
Heteroconger chapmani is an eel in the family Congridae. It was described by Albert William Herre in 1923. It is a marine, tropical eel which is known from a single specimen collected from the Philippines, in the western central Pacific Ocean. The holotype specimen measured 69 cm. The species is now considered unidentifiable due to the lack of detail in the author's description, and because the only known specimen was destroyed during World War II.
The snaggle-toothed snake-eel is an eel in the family Ophichthidae. It was described by John E. McCosker and David Ross Robertson in 2001. It is a marine, tropical eel which is known from a single specimen collected from Panama, in the eastern central Pacific Ocean. From the specimen it is known to dwell at a depth range of 5–10 metres, and reach a maximum total length of 104 centimetres. Based on other eel species it is estimated to inhabit burrows on a permanent or semi-permanent basis, and feed on small fish and crustaceans.
The thin snake eel is an eel in the family Ophichthidae. It was described by John E. McCosker and Richard Heinrich Rosenblatt in 1998. It is a marine, tropical eel known from the eastern central and southeastern Pacific Ocean, including Mexico and Colombia. It is known from two specimens observed dwelling in sand at a depth range of 0 to 8 m. The maximum length recorded was 23.1 cm (9.1 in), albeit on an immature specimen.
Abyssocottus gibbosus is a species of ray-finned fish belonging to the family Cottidae, the typical sculpins. These sculpins are endemic to Lake Baikal in Russia. It dwells at a depth range of 400–1600 metres. Males can reach a maximum total length of 14 centimetres.
Asprocottus intermedius is a species of ray-finned fish belonging to the family Cottidae, the typical sculpins. It was described by Dmitrii Nikolaevich Taliev in 1955, originally as a subspecies of Asprocottus herzensteini. It is a freshwater fish which is endemic to Lake Baikal, Russia. It is known to dwell at a depth range of 200–800 metres.
Asprocottus minor is a species of ray-finned fish belonging to the family Cottidae, the typical sculpins. It was described by Valentina Grigorievna Sideleva in 2001, originally as a subspecies of Asprocottus korjakovi. It is a freshwater fish which is endemic to Lake Baikal, Russia.
Procottus gotoi is a species of ray-finned fish belonging to the family Cottidae, the typical sculpins. It is endemic to Lake Baikal in Siberia. This species was first formally described in 2001 by Valentina Grigorievna Sideleva.
Procottus jeittelesii, the red sculpin or red Baikal sculpin, is a species of ray-finned fish belonging to the family Cottidae, the typical sculpins. This species is endemic to Lake Baikal in Russia. It is a freshwater fish that dwells under stones or in holes in the mud at a depth range of 0 to 800 m. It is often found at around 100 m (330 ft), and is most abundant during the autumn and winter. From the late winter to the spring it breeds at depths of 5 to 30 m. It can reach a maximum length of 18 cm (7.1 in), but typically is 10–12 cm (3.9–4.7 in). It has a red spotted or banded pattern on a light background. The red sculpin resembles two of its close relatives, the smaller P. gurwici and the larger P. major.
Procottus major is a species of ray-finned fish belonging to the family Cottidae, the typical sculpins. This species is endemic to Lake Baikal in Siberia. It was originally described as a subspecies of the similar but smaller red sculpin. P. major can be found at depths of up to 900 m (3,000 ft), especially on a muddy or rocky-mud bottom. In the spring and summer it typically occurs deeper than 100 m (330 ft), and in the fall and winter from 30 to 200 m (98–656 ft). It can reach a length of 30 cm (12 in), but is usually 18–22 cm (7.1–8.7 in). It feeds on smaller animals, especially gammarids, and breeding occurs in the winter at depths of 60–140 m (200–460 ft). This species is fished and its young are an important food source for other fish.
Hydrocynus forskahlii, the elongate tigerfish, is a species of predatory characin from the family Alestidae which is found in northern and western Africa.
The flapnose sea catfish, also known as the brown sea catfish, is a species of catfish in the family Ariidae. It was described by Theodore Gill in 1863, originally under the genus Leptarius. It inhabits rivers and estuaries in Ecuador, Colombia, Guatemala, Costa Rica, El Salvador, Panama, Honduras, Nicaragua, Mexico, and Peru. It dwells at a depth range of 0 to 15 m. It reaches a maximum total length of 90 cm (35 in), more commonly reaching a TL of 50 cm (20 in).
