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Aquarist
An aquarist is a person who manages aquariums, either professionally or as a hobby. They typically care for aquatic animals, including fish and marine invertebrates. Some may care for aquatic mammals. Aquarists often work at public aquariums. They may also work at nature reserves, zoos, and amusement parks. Some aquarists conduct field research outdoors. In business, aquarists may work at pet stores, as commercial fish breeders, or as manufacturers. Some aquarists are hobbyists, also known as "home aquarists," who may vary in skills and experience. History People have cared for aquatic animals since ancient times. The Sumerians kept fish in ponds as early as 2500 BCE. Pliny the Elder wrote of people who kept fish as oracles, and ancient Agrigent was believed to have fish ponds. The Roman poet Rutilus Namatianus wrote of a Etrurian Jew who kept fish in opaque tanks. By the 10th century, goldfish were popular pets in China. In 1369, Emperor Hung Wu established a porcelain facto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goldfish
The goldfish (''Carassius auratus'') is a freshwater fish in the family Cyprinidae of order Cypriniformes. It is commonly kept as a pet in indoor aquariums, and is one of the most popular aquarium fish. Goldfish released into the wild have become an invasive pest in parts of North America. Native to East Asia, the goldfish is a relatively small member of the carp family (which also includes the Prussian carp and the crucian carp). It was first selectively bred for color in imperial China more than 1,000 years ago, and several distinct breeds have since been developed. Goldfish breeds vary greatly in size, body shape, fin configuration, and coloration (various combinations of white, yellow, orange, red, brown, and black are known). History Various species of carp (collectively known as Asian carp) have been bred and reared as food fish for thousands of years in East Asia. Some of these normally gray or silver species have a tendency to produce red, orange or yellow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquarium
An aquarium (plural: ''aquariums'' or ''aquaria'') is a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, aquatic reptiles, such as turtles, and aquatic plants. The term ''aquarium'', coined by English naturalist Philip Henry Gosse, combines the Latin root , meaning 'water', with the suffix , meaning 'a place for relating to'. The aquarium principle was fully developed in 1850 by the chemist Robert Warington, who explained that plants added to water in a container would give off enough oxygen to support animals, so long as the numbers of animals did not grow too large. The aquarium craze was launched in early Victorian England by Gosse, who created and stocked the first public aquarium at the London Zoo in 1853, and published the first manual, ''The Aquarium: An Unveiling of the Wonders of the Deep Sea'' in 1854.Katherine C. Grier (2008) ... [...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] |
Richard Bradley (botanist)
Richard Bradley FRS (1688 – 5 November 1732) was an English naturalist specialising in botany. He published important works on ecology, horticulture, and natural history. Biography Little is known about Bradley's childhood aside from an early interest in gardening and the fact that he lived in the vicinity of London, a city at the time with many amateur naturalists. Though Bradley lacked a university education, his first publication, ''Treatise of Succulent Plants'', gained him traction with influential patrons like James Petiver and later, Hans Sloane. With their support, he was proposed and elected a Fellow of the Royal Society in 1712, at the age of 24. In 1714, Bradley visited the Netherlands and took an interest in horticulture. He spent the next decade back in England writing treatises on topics related to this central interest, like weather, fertiliser, productivity, and plant hybridisation. In recognition of his work in the field and with the (thereafter unfulfi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hongwu Emperor
The Hongwu Emperor (21 October 1328 – 24 June 1398), personal name Zhu Yuanzhang (), courtesy name Guorui (), was the founding emperor of the Ming dynasty of China, reigning from 1368 to 1398. As famine, plagues and peasant revolts increased across China proper in the 14th century, Zhu Yuanzhang rose to command the Red Turban forces that conquered China proper, ending the Mongol-led Yuan dynasty and forcing the remnant Yuan court (known as Northern Yuan in historiography) to retreat to the Mongolian Plateau. Zhu claimed the Mandate of Heaven and established the Ming dynasty at the beginning of 1368 and occupied the Yuan capital, Khanbaliq (present-day Beijing), with his army that same year. Trusting only his family, he made his many sons feudal princes along the northern marches and the Yangtze valley.Chan Hok-lam.Legitimating Usurpation: Historical Revisions under the Ming Yongle Emperor (r. 14021424)". ''The Legitimation of New Orders: Case Studies in World ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sakai
is a city located in Osaka Prefecture, Japan. It has been one of the largest and most important seaports of Japan since the medieval era. Sakai is known for its keyhole-shaped burial mounds, or kofun, which date from the fifth century and include Daisen Kofun, the largest grave in the world by area. Once known for swords, Sakai is now famous for the quality of its cutlery. , the city had an estimated population of 819,965, making it the fourteenth most populous city in Japan (excluding Tokyo). Geography Sakai is located in southern Osaka Prefecture, on the edge of Osaka Bay and directly south of the city of Osaka. Neighboring municipalities Osaka Prefecture *Osaka * Matsubara * Habikino * Ōsakasayama *Kawachinagano *Izumi * Takaishi Climate Sakai has a Humid subtropical climate (Köppen ''Cfa'') characterized by warm summers and cool winters with light to no snowfall. The average annual temperature in Sakai is . The average annual rainfall is with June as the wettest mon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kōriyama
is a city in Fukushima Prefecture, Japan. , the city has an estimated population of 322,996 people in 141760 households, and a population density of 430 persons per km2. The total area of the city is . Kōriyama is designated as a core city and functions as a commercial center for Fukushima Prefecture. Kōriyama is the third largest conurbation in the Tōhoku region. Geography and climate Kōriyama is located in the center of the Nakadōri region of Fukushima Prefecture in the Tōhoku region of Japan. The Adatara Mountains are to the north, Lake Inawashiro is to the west, and the Abukuma Highlands are to the east. The Abukuma River flows through downtown Kōriyama. The downtown area extends to the west of Kōriyama Station. Neighboring municipalities * Sukagawa * Aizu-Wakamatsu * Nihonmatsu * Tamura *Motomiya * Otama * Ten-ei *Hirata * Miharu *Ono * Inawashiro Climate Kōriyama has a humid continental climate (Köppen ''Cfa'') characterized by hot wet summers and coo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portugal
Portugal, officially the Portuguese Republic, In recognized minority languages of Portugal: :* mwl, República Pertuesa is a country located on the Iberian Peninsula, in Southwestern Europe, and whose territory also includes the Macaronesian archipelagos of the Azores and Madeira. It features the westernmost point in continental Europe, its mainland west and south border with the North Atlantic Ocean and in the north and east, the Portugal-Spain border, constitutes the longest uninterrupted border-line in the European Union. Its archipelagos form two autonomous regions with their own regional governments. On the mainland, Alentejo region occupies the biggest area but is one of the least densely populated regions of Europe. Lisbon is the capital and largest city by population, being also the main spot for tourists alongside Porto, the Algarve and Madeira. One of the oldest countries in Europe, its territory has been continuously settled and fought over since prehistoric tim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Designing And Maintaining Of Aquarium Tank By The Students Of College Of Agriculture Yandev
A design is a plan or specification for the construction of an object or system or for the implementation of an activity or process or the result of that plan or specification in the form of a prototype, product, or process. The verb ''to design'' expresses the process of developing a design. In some cases, the direct construction of an object without an explicit prior plan (such as in craftwork, some engineering, coding, and graphic design) may also be considered to be a design activity. The design usually has to satisfy certain goals and constraints; may take into account aesthetic, functional, economic, or socio-political considerations; and is expected to interact with a certain environment. Typical examples of designs include architectural and engineering drawings, circuit diagrams, sewing patterns and less tangible artefacts such as business process models. Designing People who produce designs are called ''designers''. The term 'designer' generally refers to someone who work ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Botany
Botany, also called plant science (or plant sciences), plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek word (') meaning " pasture", "herbs" " grass", or "fodder"; is in turn derived from (), "to feed" or "to graze". Traditionally, botany has also included the study of fungi and algae by mycologists and phycologists respectively, with the study of these three groups of organisms remaining within the sphere of interest of the International Botanical Congress. Nowadays, botanists (in the strict sense) study approximately 410,000 species of land plants of which some 391,000 species are vascular plants (including approximately 369,000 species of flowering plants), and approximately 20,000 are bryophytes. Botany originated in prehistory as herbalism with the efforts of early humans to identify – a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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