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Hypomesus
''Hypomesus'' is a genus of smelts ( Osmeridae), consisting of five species found in the northern hemisphere. Species There are currently five recognized species in this genus: * '' Hypomesus japonicus'' ( Brevoort, 1856) * ''Hypomesus nipponensis'' McAllister, 1963 (Japanese smelt) * '' Hypomesus olidus'' (Pallas, 1814) (Pond smelt) * '' Hypomesus pretiosus'' ( Girard, 1854) (Surf smelt) * ''Hypomesus transpacificus'' McAllister, 1963 (Delta smelt) The pond smelt ''H. olidus'' is widespread across northeastern Asia, Alaska, and northwestern Canada, while the Delta smelt ''H. transpacificus'' is an endangered species of the Sacramento Delta in California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an .... '' H. chishimaensis'' was at one time thought to be a separate species, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypomesus Transpacificus
The delta smelt (''Hypomesus transpacificus'') is an endangered slender-bodied smelts, smelt, about long, in the family Osmeridae. Endemic to the upper Sacramento-San Joaquin River Delta, Sacramento-San Joaquin Estuary of California, it mainly inhabits the freshwater-saltwater mixing zone of the estuary, except during its spawn (biology), spawning season, when it migrates upstream to fresh water following winter "first flush" flow events (around March to May). It functions as an indicator species for the overall health of the Delta's ecosystem. Delta Smelt are usually found at temperatures of less than 25 °C and prefer temperatures of around 20 °C. They are euryhaline but occur mostly at salinities of 0–7 practical salinity units. Because of its one-year lifecycle and relatively low fecundity, it is very susceptible to changes in the environmental conditions of its native habitat.Moyle, PB. 2002. Inland fishes of California. University of California Press, Berkeley ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypomesus Nipponensis
''Hypomesus nipponensis'' (Japanese smelt, in Japanese: ''wakasagi'') is a commercial food fish native to the lakes and estuaries of northern Honshu and Hokkaido, Japan, Korea, and Sakhalin, Khabarovsk Krai, and Primorsky Krai, Russia. It has been introduced in other locations, including the San Francisco Delta of the United States. It is raised in fisheries, and is very similar in appearance to the delta smelt (''H. transpacificus''). Synonyms ''Hypomesus chishimaensis'' was described as being a new species in the lakes of Kunashir and Iturup in 1997 based on claimed morphological differences. After later studies failed to find these morphological differences, it regarded as an ecotype of ''H. nipponensis''. A 2007 genetic analysis supported this classification, and recommended that ''H. chishimaensis'' not be given its own binomial designation. Introduction to the United States Native to the lakes and estuaries of Hokkaido, Japan and introduced to the lakes on H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypomesus
''Hypomesus'' is a genus of smelts ( Osmeridae), consisting of five species found in the northern hemisphere. Species There are currently five recognized species in this genus: * '' Hypomesus japonicus'' ( Brevoort, 1856) * ''Hypomesus nipponensis'' McAllister, 1963 (Japanese smelt) * '' Hypomesus olidus'' (Pallas, 1814) (Pond smelt) * '' Hypomesus pretiosus'' ( Girard, 1854) (Surf smelt) * ''Hypomesus transpacificus'' McAllister, 1963 (Delta smelt) The pond smelt ''H. olidus'' is widespread across northeastern Asia, Alaska, and northwestern Canada, while the Delta smelt ''H. transpacificus'' is an endangered species of the Sacramento Delta in California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an .... '' H. chishimaensis'' was at one time thought to be a separate species, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypomesus Japonicus
''Hypomesus japonicus'', the Japanese smelt, is a coastal fish species of the northwestern Pacific Ocean, ranging from the Korean Peninsula and northern Japan to the Kuril Islands and Peter the Great Bay. Size and age The maximum total length is about 25 centimeters, and the maximum weight is about 158 grams. The oldest reported age is 8 years. Habitat and reproduction ''Hypomesus japonicus'' is a marine species that enters freshwater coastal lagoons and estuaries. Spawning occurs in the month of May on beaches. They prefer marine environments but is found near coastlines, with some populations exhibiting variations in habitat characteristics depending on specific regions. Morphological Variation Hypomesus japonicus is distinguished from its closely related species, H. nipponensis, by several morphological characteristics. Although both species are commonly referred to as Japanese smelt, they possess clear differences. H. japonicus has a relatively smaller eye diameter, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypomesus Olidus
The pond smelt (''Hypomesus olidus'') is a fresh and brackish water species of smelt. It is found in the East Asia (eastern Siberia, northeast China, Korea, Hokkaido) and the northwestern North America (Alaska, northwestern Canada). It can grow to total length. Name In Korea, ''H. olidus'' is most commonly known as ''bing-eo'' (), meaning 'ice fish', although it has many different names depending on the region or the time period. It is recorded as ''dong-eo'' () meaning 'frozen fish' in old literature, while the geography section of the Annals of King Sejong recorded it as ''gwa-eo'' (), a local product of what is now the modern-day counties of Chongpyong and Kowon in North Korea; ''gwa-eo'' is named so because of its taste and shape resembling that of a melon. Among its various names, in the provinces of Jeolla and North Chungcheong, as well as the city of Daejeon, it is known as ''gong-eo'' (), in Suwon it is ''mereuchi'' (), and in Hwacheon, Gwangju, and Sokcho, it is '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smelt (fish)
Smelts are a family of small fish, the Osmeridae, found in the North Atlantic and North Pacific oceans, as well as rivers, streams and lakes in Europe, North America and Northeast Asia. They are also known as freshwater smelts or typical smelts to distinguish them from the related Argentinidae (herring smelts or argentines), Bathylagidae (deep-sea smelts), and Retropinnidae (Australian and New Zealand smelts). Some smelt species are common in the North American Great Lakes, and in the lakes and seas of the northern part of Europe, where they run in large Shoaling and schooling, schools along the saltwater coastline during spring migration to their spawning streams. In some western parts of the United States, smelt populations have greatly declined in recent decades, leading to their protection under the Endangered Species Act. The Delta smelt (''Hypomesus transpacificus'') found in the Sacramento Delta of California, and the eulachon (''Thaleichthys pacificus'') found in the Nor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypomesus Pretiosus
''Hypomesus pretiosus'', or surf smelt, is a marine smelt with a range from Prince William Sound, Alaska to Long Beach, California, although its population declines south of San Francisco. The surf smelt grows to be about 10 inches in southern waters, and 8 inches in northern waters near Canada. On average, surf smelt weigh about 10 to the pound. Spawning occurs in the nighttime, which is why it is sometimes called the night smelt, peaking in the months from May to October. With a maximum age of three to four years, some females will spawn at the age of one, and all will spawn at the age of two. Females lay from 1,500–30,000 sticky eggs in the surf zone per spawn, which they may do three to five or more times in a season. ''H. pretiosus'' feed on polychaete worms, larval fish and jellyfish, but they primarily feed on small crustaceans. They can be important parts of salmon and halibut Halibut is the common name for three species of flatfish in the family of right- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oligocene
The Oligocene ( ) is a geologic epoch (geology), epoch of the Paleogene Geologic time scale, Period that extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that define the epoch are well identified but the exact dates of the start and end of the epoch are slightly uncertain. The name Oligocene was coined in 1854 by the German paleontologist Heinrich Ernst Beyrich from his studies of marine beds in Belgium and Germany. The name comes from Ancient Greek (''olígos'') 'few' and (''kainós'') 'new', and refers to the sparsity of Neontology, extant forms of Mollusca, molluscs. The Oligocene is preceded by the Eocene Epoch and is followed by the Miocene Epoch. The Oligocene is the third and final epoch of the Paleogene Period. The Oligocene is often considered an important time of transition, a link between the archaic world of the tropical Eocene and the more modern ecosystems of the Miocene. Major chang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canada
Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of countries and dependencies by area, second-largest country by total area, with the List of countries by length of coastline, world's longest coastline. Its Canada–United States border, border with the United States is the world's longest international land border. The country is characterized by a wide range of both Temperature in Canada, meteorologic and Geography of Canada, geological regions. With Population of Canada, a population of over 41million people, it has widely varying population densities, with the majority residing in List of the largest population centres in Canada, urban areas and large areas of the country being sparsely populated. Canada's capital is Ottawa and List of census metropolitan areas and agglomerations in Canada, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Fish Genera
Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. The term excludes seawater and brackish water, but it does include non-salty mineral-rich waters, such as chalybeate springs. Fresh water may encompass frozen and meltwater in ice sheets, ice caps, glaciers, snowfields and icebergs, natural precipitations such as rainfall, snowfall, hail/ sleet and graupel, and surface runoffs that form inland bodies of water such as wetlands, ponds, lakes, rivers, streams, as well as groundwater contained in aquifers, subterranean rivers and lakes. Water is critical to the survival of all living organisms. Many organisms can thrive on salt water, but the great majority of vascular plants and most insects, amphibians, reptiles, mammals and birds need fresh water to survive. Fresh water is the water resource that is of the most and immediate use to humans. Fresh water is not always ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine Fish Genera
Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (other) * Marine art * Marine biology * Marine current power * Marine debris * Marine energy * Marine habitats * Marine life * Marine pollution Military * Marines, a naval-based infantry force ** United States Marine Corps ** Royal Marines of the UK ** Brazilian Marine Corps ** Spanish Marine Infantry ** Fusiliers marins (France) ** Indonesian Marine Corps ** Republic of China Marine Corps ** Republic of Korea Marine Corps ** Royal Thai Marine Corps *"Marine" also means "navy" in several languages: ** Austro-Hungarian Navy () ** Belgian Navy (, , ) ** Royal Canadian Navy () *** Provincial Marine (1796–1910), a predecessor to the Royal Canadian Navy ** Navy of the Democratic Republic of the Congo () ** Royal Danish Navy () ** Finnish Navy (, ) ** French Navy () ** Gabonese Navy () ** German Navy () ** Royal Moroccan Navy () ** R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
