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Southern Caspian Sprat
Southern Caspian sprat, ''Clupeonella grimmi'', is a species of fish in the family Clupeidae. It is found in the brackishwater Caspian Sea, in its central and southern parts in the pelagic The pelagic zone consists of the water column of the open ocean, and can be further divided into regions by depth (as illustrated on the right). The word ''pelagic'' is derived . The pelagic zone can be thought of as an imaginary cylinder or wa ... zone. It is a small fish, typically 11 cm length, and up to 14.5 cm maximum. Occurs not deeper that 32 m depth. Sources ''Clupeonella grimmi'' at FishBase Clupeonella Fish of the Caspian Sea Fish described in 1877 {{Clupeiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animalia
Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a Symmetry in biology#Bilateral symmetry, bilaterally symmetric body plan. The Bilateria include the protostomes, containing animals such as nematodes, arthropods, flatworms, annelids and molluscs, and th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chordata
A chordate () is an animal of the phylum Chordata (). All chordates possess, at some point during their larval or adult stages, five synapomorphies, or primary physical characteristics, that distinguish them from all the other taxa. These five synapomorphies include a notochord, dorsal hollow nerve cord, endostyle or thyroid, pharyngeal slits, and a post-anal tail. The name “chordate” comes from the first of these synapomorphies, the notochord, which plays a significant role in chordate structure and movement. Chordates are also bilaterally symmetric, have a coelom, possess a circulatory system, and exhibit metameric segmentation. In addition to the morphological characteristics used to define chordates, analysis of genome sequences has identified two conserved signature indels (CSIs) in their proteins: cyclophilin-like protein and mitochondrial inner membrane protease ATP23, which are exclusively shared by all vertebrates, tunicates and cephalochordates. These CSIs provi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Actinopterygii
Actinopterygii (; ), members of which are known as ray-finned fishes, is a class of bony fish. They comprise over 50% of living vertebrate species. The ray-finned fishes are so called because their fins are webs of skin supported by bony or horny spines (rays), as opposed to the fleshy, lobed fins that characterize the class Sarcopterygii (lobe-finned fish). These actinopterygian fin rays attach directly to the proximal or basal skeletal elements, the radials, which represent the link or connection between these fins and the internal skeleton (e.g., pelvic and pectoral girdles). By species count, actinopterygians dominate the vertebrates, and they constitute nearly 99% of the over 30,000 species of fish. They are ubiquitous throughout freshwater and marine environments from the deep sea to the highest mountain streams. Extant species can range in size from '' Paedocypris'', at , to the massive ocean sunfish, at , and the long-bodied oarfish, at . The vast majority of Act ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clupeiformes
Clupeiformes is the order of ray-finned fish that includes the herring family, Clupeidae, and the anchovy family, Engraulidae. The group includes many of the most important forage and food fish. Clupeiformes are physostomes, which means that their gas bladder has a pneumatic duct connecting it to the gut. They typically lack a lateral line, but still have the eyes, fins and scales that are common to most fish, though not all fish have these attributes. They are generally silvery fish with streamlined, spindle-shaped, bodies, and they often school. Most species eat plankton which they filter from the water with their gill rakers. The former order of Isospondyli was subsumed mostly by Clupeiformes, but some isospondylous fishes (isospondyls) were assigned to Osteoglossiformes, Salmoniformes, Cetomimiformes, etc. Families The order includes about 405 species in seven families: * Order Clupeiformes ** Suborder Denticipitoidei *** Family Denticipitidae (denticle herring) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clupeidae
Clupeidae is a family of ray-finned fishes, comprising, for instance, the herrings, shads, sardines, hilsa, and menhadens. The clupeoids include many of the most important food fishes in the world, and are also commonly caught for production of fish oil and fish meal. Many members of the family have a body protected with shiny cycloid (very smooth and uniform) scales, a single dorsal fin, and a fusiform body for quick, evasive swimming and pursuit of prey composed of small planktonic animals. Due to their small size and position in the lower trophic level of many marine food webs, the levels of methylmercury they bioaccumulate are very low, reducing the risk of mercury poisoning when consumed. Description and biology Clupeids are mostly marine forage fish, although a few species are found in fresh water. No species has scales on the head, and some are entirely scaleless. The lateral line is short or absent, and the teeth are unusually small where they are present at all ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clupeinae
Clupeinae is a subfamily of herrings, sardines and sprats belonging to the family Clupeidae Clupeidae is a family of ray-finned fishes, comprising, for instance, the herrings, shads, sardines, hilsa, and menhadens. The clupeoids include many of the most important food fishes in the world, and are also commonly caught for production ....Whitehead et al. 1988, p. 42 Notes References * Whitehead PJP, Nelson GJ and Wongratana T (1988) FAO species catalogue, volume 7''Clupeoid Fishes of the World (Suborder Clupeoidei)''FAO Fisheries Synopsis 125, Rome. . tp://ftp.fao.org/docrep/fao/009/t0835e/t0835e.zip Download ZIP (16 MB) {{Taxonbar, from=Q2110160 Seafood Commercial fish Oily fish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clupeonella
''Clupeonella'' is a genus of fish in the family Clupeidae. They are widespread in the fresh and brackish waters of the Caspian Sea and Black drainages. Species * ''Clupeonella abrau'' (Maliatsky, 1930) (Abrau sprat) * '' Clupeonella caspia'' Svetovidov, 1941 (Caspian tyulka) * '' Clupeonella cultriventris'' ( Nordmann, 1840) (Black Sea sprat) * '' Clupeonella engrauliformis'' (Borodin, 1904) (Anchovy sprat) * '' Clupeonella grimmi'' Kessler, 1877 (Southern Caspian sprat) * ''Clupeonella muhlisi'' Neu, 1934 * '' Clupeonella tscharchalensis'' (Borodin Alexander Porfiryevich Borodin ( rus, link=no, Александр Порфирьевич Бородин, Aleksandr Porfir’yevich Borodin , p=ɐlʲɪkˈsandr pɐrˈfʲi rʲjɪvʲɪtɕ bərɐˈdʲin, a=RU-Alexander Porfiryevich Borodin.ogg, ..., 1896) (Freshwater tyulka) Sources * Clupeidae Freshwater fish genera Taxa named by Karl Kessler Taxonomy articles created by Polbot {{Clupeiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karl Kessler
Karl Fedorovich Kessler (19 November 1815 – 3 March 1881) was a German-Russian zoologist and author of zoological taxa signed ''Kessler'', who was mostly active in Kyiv, Ukraine. He conducted most of his studies of birds in Ukrainian regions of the Russian Empire: Kiev Governorate, Volyn Governorate, Kherson Governorate, Poltava Governorate and Bessarabia. He also studied the fish of the Dniester, Dnieper, and Southern Bug rivers, and on the Ukrainian coast of the Black Sea. Kessler was one of the first zoologists to propose that mutual aid, rather than mutual struggle, was the main factor in the evolution of a species. The anarchist Peter Kropotkin later developed this theory in his book '' Mutual Aid: A Factor of Evolution''. Tribute The Kessler's gudgeon ''(Romanogobio kesslerii)'' was named after him. See also * :Taxa named by Karl Kessler *Antoine Laurent Apollinaire Fée *Jean-Charles Houzeau Jean-Charles Houzeau de Lehaie (October 7, 1820 – July 12, 1888) was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nikolai Mikhailovich Knipovich
Nikolai Mikhailovich Knipovich (also Knipowitsch) (6 April Old_Style_and_New_Style_dates.html" ;"title="nowiki/>O.S. 25 March1862 – 23 February 1939) was a Russian and Soviet ichthyology">ichthyologist, marine zoologist and oceanographer, notable as the founder of fisheries research in the Russian North. Biography General Knipovich graduated from the Saint Petersburg State University">Saint Petersburg Imperial University in 1886 and went on to defend his master's thesis "Materials for the study of Ascothoracida" in 1892. He was then elected assistant professor of the Saint Petersburg State University, University in 1893. From 1894 until 1921 he worked at the Zoological Museum of the St. Petersburg Academy of Sciences. He then became the Professor of biology and zoology in the First Women's Medical Institute (present-day Saint Petersburg State Medical University) in 1911, continuing to fill the position until 1930 . He became an Honorary Member of the Academy of Sciences of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish
Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of living fish species are ray-finned fish, belonging to the class Actinopterygii, with around 99% of those being teleosts. The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. Fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many (such as sharks) became formidable marine predators rather than just the prey of arthrop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caspian Sea
The Caspian Sea is the world's largest inland body of water, often described as the List of lakes by area, world's largest lake or a full-fledged sea. An endorheic basin, it lies between Europe and Asia; east of the Caucasus, west of the broad steppe of Central Asia, south of the fertile plains of Southern Russia in Eastern Europe, and north of the mountainous Iranian Plateau of Western Asia. It covers a surface area of (excluding the highly saline lagoon of Garabogazköl to its east) and a volume of . It has a salinity of approximately 1.2% (12 g/L), about a third of the salinity of average seawater. It is bounded by Kazakhstan to the northeast, Russia to the northwest, Azerbaijan to the southwest, Iran to the south, and Turkmenistan to the southeast. The sea stretches nearly from north to south, with an average width of . Its gross coverage is and the surface is about below sea level. Its main freshwater Inflow (hydrology), inflow, Europe's longest river, the Volga, enters ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pelagic
The pelagic zone consists of the water column of the open ocean, and can be further divided into regions by depth (as illustrated on the right). The word ''pelagic'' is derived . The pelagic zone can be thought of as an imaginary cylinder or water column between the surface of the sea and the bottom. Conditions in the water column change with depth: pressure increases; temperature and light decrease; salinity, oxygen, micronutrients (such as iron, magnesium and calcium) all change. Marine life is affected by bathymetry (underwater topography) such as the seafloor, shoreline, or a submarine seamount, as well as by proximity to the boundary between the ocean and the atmosphere at the ocean surface, which brings light for photosynthesis, predation from above, and wind stirring up waves and setting currents in motion. The pelagic zone refers to the open, free waters away from the shore, where marine life can swim freely in any direction unhindered by topographical constraints. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
