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List Of Freshwater Fish Of Russia
List of freshwater fish of Russia includes species of freshwater fish found in Russian Federation, and includes those introduced. Acipenseriformes Acipenseridae (Sturgeons) * Acipenser ** ''Acipenser baerii'' — Siberian sturgeon ** '' Acipenser gueldenstaedtii'' — Russian sturgeon ** '' Acipenser mikadoi '' — Sakhalin sturgeon ** '' Acipenser nudiventris'' — Fringebarbel sturgeon ** '' Acipenser persicus'' — Persian sturgeon ** '' Acipenser ruthenus'' — Sterlet ** '' Acipenser schrenckii'' — Japanese sturgeon ** '' Acipenser stellatus'' — Starry sturgeon ** '' Acipenser sturio'' — European sea sturgeon * Huso ** '' Huso dauricus'' — Kaluga sturgeon ** '' Huso huso'' — Beluga sturgeon Polyodontidae (Paddlefishes) * Polyodon ** '' Polyodon spathula'' — American paddlefish; North American species, acclimatized Clupeiformes Clupeidae (Herring, shads, sardines, and menhadens)) * Alosa (River herrings) ** ''Alosa alosa'' — Allis shadbr>** '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Fish
Freshwater fish are those that spend some or all of their lives in fresh water, such as rivers and lakes, with a salinity of less than 1.05%. These environments differ from marine conditions in many ways, especially the difference in levels of salinity. To survive fresh water, the fish need a range of physiology, physiological adaptations. 41.24% of all known species of fish are found in fresh water. This is primarily due to the rapid speciation that the scattered habitats make possible. When dealing with ponds and lakes, one might use the same basic models of speciation as when studying island biogeography. Physiology Freshwater fish differ physiologically from salt water fish in several respects. Their gills must be able to diffuse dissolved gases while keeping the salts in the body fluids inside. Their scales reduce water diffusion through the skin: freshwater fish that have lost too many scales will die. They also have well developed kidneys to reclaim salts from body flui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acipenser Schrenckii
The Japanese sturgeon, or Amur sturgeon (''Acipenser schrenckii'') is a species of fish in the family Acipenseridae found in the Amur River basin in China and Russia. Claims of its presence in the Sea of Japan The Sea of Japan is the marginal sea between the Japanese archipelago, Sakhalin, the Korean Peninsula, and the mainland of the Russian Far East. The Japanese archipelago separates the sea from the Pacific Ocean. Like the Mediterranean Sea, i ... need confirmation. The species has 11–16 dorsal, 34–47 lateral, and 7–16 ventral scutes. Their dorsal fins have 38–53 rays and 20–35 anal fin rays. They also have greyish-brown backs and pale ventral sides. The species could reach up to 3 m (9.8 ft) in length, and weight over 190 kg.Description and distribution The spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyodon Spathula
The American paddlefish (''Polyodon spathula,'' also known as a Mississippi paddlefish, spoon-billed cat, or spoonbill) is a species of ray-finned fish. It is the only living species of paddlefish (Polyodontidae). This family is most closely related to the sturgeons; together they make up the order Acipenseriformes, which are one of the most primitive living groups of ray-finned fish. Fossil records of other paddlefish species date back 125 million years to the Early Cretaceous, with records of ''Polyodon'' extending back 65 million years to the early Paleocene. The American paddlefish is a smooth-skinned freshwater fish with an almost entirely cartilaginous skeleton and a paddle-shaped rostrum (snout), which extends nearly one-third its body length. It has been referred to as a freshwater shark because of its heterocercal tail or caudal fin resembling that of sharks, though it is not closely related. The American paddlefish is a highly derived fish because it has evolved speci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyodon
The American paddlefish (''Polyodon spathula,'' also known as a Mississippi paddlefish, spoon-billed cat, or spoonbill) is a species of ray-finned fish. It is the only extant taxon, living species of paddlefish (Polyodontidae). This family is most closely related to the sturgeons; together they make up the order (biology), order Acipenseriformes, which are one of the most Basal (phylogenetics), primitive living groups of ray-finned fish. Fossil records of other paddlefish species date back 125 million years to the Early Cretaceous, with records of ''Polyodon'' extending back 65 million years to the early Paleocene. The American paddlefish is a smooth-skinned freshwater fish with an almost entirely cartilage, cartilaginous skeleton and a paddle-shaped rostrum (anatomy), rostrum (snout), which extends nearly one-third its body length. It has been referred to as a freshwater shark because of its heterocercal tail or caudal fin resembling that of sharks, though it is not closely rela ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyodontidae
Paddlefish (family Polyodontidae) are a family of ray-finned fish belonging to order Acipenseriformes, and one of two living groups of the order alongside sturgeons (Acipenseridae). They are distinguished from other fish by their titular elonglated rostrums, which are thought to enhance electroreception to detect prey. Paddlefish have been referred to as "primitive fish" because Acipenseriformes are amongst the earliest diverging lineages of ray-finned fish, having diverged from all other living groups over 300 million years ago. Paddlefish are almost exclusively North American and Chinese, both extant and in the fossil record. There are six known species: four extinct species known only from fossil remains (three from western North America, one from China), one extant species, the American paddlefish (''Polyodon spathula'') which is native to the Mississippi River basin in the U.S., and the Chinese paddlefish (''Psephurus gladius''), declared extinct in 2022 following a 2019 r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beluga Sturgeon
The beluga (), also known as the beluga sturgeon or great sturgeon (''Huso huso''), is a species of anadromous fish in the sturgeon family (Acipenseridae) of order Acipenseriformes. It is found primarily in the Caspian and Black Sea basins, and formerly in the Adriatic Sea. Based on maximum size, it is the third-most-massive living species of bony fish.tp://ftp.fao.org/docrep/fao/009/ac482e/ac482e27.pdf Subfamily A ...'', ''Aspius'' and ''Engraulis'' are the preferred prey. In estuaries and rivers of the same area, migrating spawners eat various cyprinids, mainly ''Cyprinus carpio'' and ''Rutilus rutilus'', ''Sander lucioperca'' and, among sturgeons, ''Acipenser ruthenus'' is the main prey. Little is known about the diet of the Adriatic population. It has been reported that in marine and brackish environments, adult ''H. huso'' forage primarily on molluscs (Cephalopoda, of which common cuttlefish, ''Sepia officinalis,'' and European squid, ''Loligo vulgaris,'' are particularl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huso Huso
The beluga (), also known as the beluga sturgeon or great sturgeon (''Huso huso''), is a species of anadromous fish in the sturgeon family (Acipenseridae) of order Acipenseriformes. It is found primarily in the Caspian and Black Sea basins, and formerly in the Adriatic Sea. Based on maximum size, it is the third-most-massive living species of bony fish.tp://ftp.fao.org/docrep/fao/009/ac482e/ac482e27.pdf Subfamily A ...'', ''Aspius'' and ''Engraulis'' are the preferred prey. In estuaries and rivers of the same area, migrating spawners eat various cyprinids, mainly ''Cyprinus carpio'' and ''Rutilus rutilus'', ''Sander lucioperca'' and, among sturgeons, ''Acipenser ruthenus'' is the main prey. Little is known about the diet of the Adriatic population. It has been reported that in marine and brackish environments, adult ''H. huso'' forage primarily on molluscs (Cephalopoda, of which common cuttlefish, ''Sepia officinalis,'' and European squid, ''Loligo vulgaris,'' are particularly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kaluga Sturgeon
The kaluga (''Huso dauricus''), also known as the river beluga, is a large predatory sturgeon found in the Amur River basin. With a maximum size of at least 1,000 kg (2,205 lb) and 5.6 m (18.6 ft), the kaluga is one of the biggest of the sturgeon family. Like the slightly larger beluga, it spends part of its life in salt water. Unlike the beluga, this fish has 5 major rows of dermal scutes and feeds on salmon and other fish in the Amur. They have gray-green to black backs with a yellowish green-white underbelly. The kaluga has been hunted to near extinction for its valuable roe. Despite constant anti-poaching patrols, poachers still continue to catch the fish. In Russia, illegally fishing for kaluga anywhere in the Amur River is felony punishable by law. However, kalugas are known to have an aggressive nature, and instances of them toppling fishing boats and drowning fishermen have been reported, although no concrete evidence exists of them assaulting or hunti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huso Dauricus
The kaluga (''Huso dauricus''), also known as the river beluga, is a large predatory sturgeon found in the Amur River basin. With a maximum size of at least 1,000 kg (2,205 lb) and 5.6 m (18.6 ft), the kaluga is one of the biggest of the sturgeon family. Like the slightly larger beluga, it spends part of its life in salt water. Unlike the beluga, this fish has 5 major rows of dermal scutes and feeds on salmon and other fish in the Amur. They have gray-green to black backs with a yellowish green-white underbelly. The kaluga has been hunted to near extinction for its valuable roe. Despite constant anti-poaching patrols, poachers still continue to catch the fish. In Russia, illegally fishing for kaluga anywhere in the Amur River is felony punishable by law. However, kalugas are known to have an aggressive nature, and instances of them toppling fishing boats and drowning fishermen have been reported, although no concrete evidence exists of them assaulting or hun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huso
''Huso'' is a genus of large sturgeons from Eurasia. It contains two species, both of which are critically endangered: *''Huso dauricus'' (Georgi, 1775) (kaluga) *''Huso huso'' (Linnaeus, 1758) (beluga) Recent data indicate a polyphyletic origin of the genus ''Huso'', and it is suggested that the two ''Huso'' species should be included in the genus ''Acipenser ''Acipenser'' is a genus of sturgeons. With 17 living species (others are only known from fossil remains), it is the largest genus in the order Acipenseriformes. The genus is paraphyletic, containing all sturgeons that do not belong to ''Huso'', ' ...''. References Sturgeons Extant Zanclean first appearances Ray-finned fish genera {{Acipenseriformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
European Sea Sturgeon
The European sea sturgeon (''Acipenser sturio''), also known as the Atlantic sturgeon or common sturgeon, is a species of sturgeon native to Europe. It was formerly abundant, being found in coastal habitats all over Europe. It is anadromous and breeds in rivers. It is currently a critically endangered species. Although the name Baltic sturgeon sometimes has been used, it has now been established that sturgeon of the Baltic region are '' A. oxyrinchus'', a species otherwise restricted to the Atlantic coast of North America. Description The wedge-shaped head of the European sea sturgeon ends in a long point. There are many sensitive barbels on the facial area. The dorsal fins are located very far back on the body. Five longitudinal lines of large osseous plates are found on the body of the fish. The stomach is yellow and the back is a brownish grey. This sturgeon can reach and in weight, but a more common length is .They can reach an age of 100 years, and have a late sexu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acipenser Sturio
The European sea sturgeon (''Acipenser sturio''), also known as the Atlantic sturgeon or common sturgeon, is a species of sturgeon native to Europe. It was formerly abundant, being found in coastal habitats all over Europe. It is anadromous and breeds in rivers. It is currently a critically endangered species. Although the name Baltic sturgeon sometimes has been used, it has now been established that sturgeon of the Baltic region are '' A. oxyrinchus'', a species otherwise restricted to the Atlantic coast of North America. Description The wedge-shaped head of the European sea sturgeon ends in a long point. There are many sensitive barbels on the facial area. The dorsal fins are located very far back on the body. Five longitudinal lines of large osseous plates are found on the body of the fish. The stomach is yellow and the back is a brownish grey. This sturgeon can reach and in weight, but a more common length is .They can reach an age of 100 years, and have a late sexu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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