Lake Tanganyika is an African Great Lake. It is the second-oldest freshwater lake in the world, the second-largest by volume, and the second-deepest, in all cases after Lake Baikal in Siberia. It is the world's longest freshwater lake. The lake is shared between four countries—Tanzania, the Democratic Republic of the Congo (DRC), Burundi, and Zambia, with Tanzania (46%) and DRC (40%) possessing the majority of the lake. It drains into the Congo River system and ultimately into the Atlantic Ocean.
Coregonus vandesius, the vendace, is a freshwater whitefish found in the United Kingdom. Population surveys since the 1960s have revealed a steady decline and the fish is no longer present in some of its previous haunts but is still present in Bassenthwaite Lake and Derwent Water. The main threats it faces are eutrophication and the introduction of alien species of fish which eat its eggs and fry. The International Union for Conservation of Nature has rated its conservation status as "endangered".
Edgar Albert Smith was a British zoologist, a malacologist.
Coregonus confusus is a freshwater whitefish from Switzerland. It is also known by its native Swiss German common name, spelled pfärrit, pfarrig, and pfärrig. It was described as Coregonus annectens confusus by Victor Fatio in 1885 from syntypes which have been lost in 1902. The species is rare and only known with certainty from Lake Biel. There is also a possibility that it might occur in Lake Neuchâtel. It vanished from Lake Murten in the 1960s due to eutrophication and water level management.
Gastrotheca gracilis is a species of frog in the family Hemiphractidae. It is found in Argentina and possibly Bolivia. Its natural habitats are subtropical or tropical moist lowland forests and intermittent freshwater marshes. It is threatened by habitat loss.
The Congo clawless otter, also known as the Cameroon clawless otter, is a species of clawless otter in the family Mustelidae. It was formerly recognised as a subspecies of the African clawless otter.
Odontesthes gracilis is a species of fish in the family Atherinidae. It is endemic to the Juan Fernandez Islands off Chile. It occurs around the mouths of caves, in inlets and around piers. This is a species which can be found in freshwater, brackish and marine waters. This species was described as Chirostoma gracile in 1898 by Franz Steindachner with the type locality given as Más a Tierra.
Anceya is a genus of tropical freshwater snails with an operculum, aquatic gastropod mollusks in the family Paludomidae.
Bridouxia is a genus of small tropical freshwater snails with an operculum, aquatic gastropod mollusks in the family Paludomidae.
Fluviopupa gracilis is a species of very small freshwater snails that have an operculum, aquatic gastropod mollusks in the family Tateidae.
Gabbiella rosea is a species of small freshwater snails with an operculum, aquatic prosobranch gastropod mollusks in the family Bithyniidae.
Lavigeria coronata is a species of tropical freshwater snail with a gill and an operculum, aquatic gastropod molluscs in the family Paludomidae.
Melanoides admirabilis is a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Thiaridae.
Pseudospatha tanganyicensis a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. It is the only species in the genus Pseudospatha.
Syrnolopsis is a genus of medium-sized freshwater snails with an operculum, aquatic gastropod mollusks in the family Paludomidae.
Syrnolopsis lacustris is a species of medium-sized freshwater snail with an operculum, an aquatic gastropod mollusk in the family Paludomidae. This species is found in Lake Tanganyika, which includes the countries of Burundi, the Democratic Republic of the Congo, Tanzania, and Zambia. The natural habitat of this species is freshwater lakes.
Syrnolopsis minuta is a species of medium-sized freshwater snail with an operculum, an aquatic gastropod mollusks in the family Paludomidae. This species is found around the edges of Lake Tanganyika, which includes the countries of Burundi, the Democratic Republic of the Congo, Tanzania, and Zambia. The natural habitat of this species is intermittent freshwater lakes.
Radix auricularia, common name the big-ear radix, is a species of medium-sized freshwater snail, an aquatic pulmonate gastropod mollusk in the family Lymnaeidae.
Paludomidae, common name paludomids, is a family of freshwater snails, gastropod molluscs in the clade Sorbeoconcha.
Lake Bermin is a small lake in the volcanic chain in the Southwest Region of Cameroon. It is a volcanic lake with a diameter of about 700 m (2,300 ft) and a crater rim that rises to a height of about 46 m (150 ft). This highly isolated lake is roughly circular in shape, lacks an inflow, but has an outflow into the Cross River system.
