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Spotted Tilapia
The spotted tilapia (''Pelmatolapia mariae''Dunz, A.R. & Schliewen, U.K. (2013): Molecular phylogeny and revised classification of the haplotilapiine cichlid fishes formerly referred to as ''“Tilapia”''. ''Molecular Phylogenetics and Evolution, Available online 29 March 2013 doi: 10.1016/j.ympev.2013.03.015''), also known as the spotted mangrove cichlid or black mangrove cichlid, is a species of fish of the cichlid family. It is native to fresh and brackish water in West and Central Africa, but has been introduced to other regions where it is considered invasive. Spotted tilapia have high fecundity, simple food requirements and extensive tolerance of environmental variables such as water temperature, salinity, and pollution. These characteristics allow spotted cichlids to rapidly populate many areas that have an appropriate habitat. Typically spotted tilapia tend to be an aggressive and territorial species, and research has found that internal reproductive androgenic factor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Albert Boulenger
George Albert Boulenger (19 October 1858 – 23 November 1937) was a Belgian-British zoologist who described and gave scientific names to over 2,000 new animal species, chiefly fish, reptiles, and amphibians. Boulenger was also an active botanist during the last 30 years of his life, especially in the study of roses. Life Boulenger was born in Brussels, Belgium, the only son of Gustave Boulenger, a Belgian public notary, and Juliette Piérart, from Valenciennes. He graduated in 1876 from the Free University of Brussels (1834–1969), Free University of Brussels with a degree in natural sciences, and worked for a while at the Royal Belgian Institute of Natural Sciences, Brussels, as an assistant naturalist studying amphibians, reptiles, and fishes. He also made frequent visits during this time to the ''National Museum of Natural History (France), Muséum national d'Histoire naturelle'' in Paris and the Natural History Museum, London, British Museum in London. Boulenger develop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cameroon
Cameroon, officially the Republic of Cameroon, is a country in Central Africa. It shares boundaries with Nigeria to the west and north, Chad to the northeast, the Central African Republic to the east, and Equatorial Guinea, Gabon, and the Republic of the Congo to the south. Its coastline lies on the Bight of Biafra, part of the Gulf of Guinea, and the Atlantic Ocean. Due to its strategic position at the crossroads between West Africa and Central Africa, it has been categorized as being in both camps. Cameroon's population of nearly 31 million people speak 250 native languages, in addition to the national tongues of English and French, or both. Early inhabitants of the territory included the Sao civilisation around Lake Chad and the Baka people (Cameroon and Gabon), Baka hunter-gatherers in the southeastern rainforest. Portuguese discoveries, Portuguese explorers reached the coast in the 15th century and named the area ''Rio dos Camarões'' (''Shrimp River''), which became ''C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New South Wales
New South Wales (commonly abbreviated as NSW) is a States and territories of Australia, state on the Eastern states of Australia, east coast of :Australia. It borders Queensland to the north, Victoria (state), Victoria to the south, and South Australia to the west. Its coast borders the Coral Sea, Coral and Tasman Seas to the east. The Australian Capital Territory and Jervis Bay Territory are Enclave and exclave, enclaves within the state. New South Wales' state capital is Sydney, which is also Australia's most populous city. , the population of New South Wales was over 8.3 million, making it Australia's most populous state. Almost two-thirds of the state's population, 5.3 million, live in the Greater Sydney area. The Colony of New South Wales was founded as a British penal colony in 1788. It originally comprised more than half of the Australian mainland with its Western Australia border, western boundary set at 129th meridian east in 1825. The colony then also includ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Victoria (Australia)
Victoria, commonly abbreviated as Vic, is a States and territories of Australia, state in southeastern Australia. It is the second-smallest state (after Tasmania), with a land area of ; the second-most-populated state (after New South Wales), with a population of over 7 million; and the most densely populated state in Australia (30.6 per km2). Victoria's economy is the List of Australian states and territories by gross state product, second-largest among Australian states and is highly diversified, with service sectors predominating. Victoria is bordered by New South Wales to the north and South Australia to the west and is bounded by the Bass Strait to the south (with the exception of a small land border with Tasmania located along Boundary Islet), the Southern Ocean to the southwest, and the Tasman Sea (a marginal sea of the South Pacific Ocean) to the southeast. The state encompasses a range of climates and geographical features from its temperate climate, temperate coa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hazelwood Power Station
The Hazelwood Power Station is a decommissioned Lignite, brown coal-fuelled thermal power station located in the Latrobe Valley of Victoria, Australia. Built between 1964 and 1971, the 1,600-megawatt-capacity power station was made up of eight 200MW units, and supplied up to 25% of Victoria's base load power plant, base load electricity and more than 5% of Australia's total electricity demand. It was a 'subcritical' pulverized coal-fired boiler. The station was listed as the List of least carbon efficient power stations, least carbon efficient power station in the OECD in a 2005 report by World Wide Fund for Nature, WWF Australia, making it one of the most polluting power stations in the world. At 1.56 tonnes of CO2 for each megawatt hour of electricity, it was 50% more polluting than the average black coal power station in New South Wales or Queensland. Hazelwood emitted 14% of Victoria's annual greenhouse gas emissions and 3% of Australia's greenhouse gas emissions. Internatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Aquarium
A freshwater aquarium is a receptacle that holds one or more freshwater aquatic organisms for decorative, pet-keeping, or research purposes. Modern aquariums are most often made from Transparency (optics), transparent glass or acrylic glass. Typical inhabitants include fish, plants, amphibians, and invertebrates, such as snails and crustaceans. Freshwater fish may be either coldwater fish, coldwater or tropical fish, tropical species. Although freshwater aquariums can be set up as community tanks, coldwater and tropical fish are generally not mixed due to incompatibilities in temperature requirements. Coldwater aquariums house goldfish and other species that do not require a heating apparatus. Warmer temperatures would actually increase their metabolism and shorten their lifespan.Johnson, E. L., & Hess, R. E. (2006). ''Fancy goldfish: A complete guide to care and collecting'', Weatherhill: Shambala Publications, Inc. For a tropical fish tank, maintaining a warm environmental te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tilapia Mariae Australia
Tilapia ( ) is the common name for nearly a hundred species of cichlid fish from the coelotilapine, coptodonine, heterotilapine, oreochromine, pelmatolapiine, and tilapiine tribes (formerly all were "Tilapiini"), with the economically most important species placed in the Coptodonini and Oreochromini. Tilapia are mainly freshwater fish native to Africa and the Middle East, inhabiting shallow streams, ponds, rivers, and lakes, and less commonly found living in brackish water. Historically, they have been of major importance in artisanal fishing in Africa, and they are of increasing importance in aquaculture and aquaponics. Tilapia can become a problematic invasive species in new warm-water habitats such as Australia, whether deliberately or accidentally introduced, but generally not in temperate climates due to their inability to survive in cold water. Traditionally a popular and affordable food in the Philippines with a mild taste, tilapia has been the fourth-most consumed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquaculture Of Tilapia
Tilapia has become the third most important fish in aquaculture after carp and salmon; worldwide production exceeded in 2002 and increases annually. Because of their high protein content, large size, rapid growth (6 to 7 months to grow to harvest size), and palatability, a number of coptodonine and oreochromine cichlids—specifically, various species of '' Coptodon'', '' Oreochromis'', and '' Sarotherodon''—are the focus of major aquaculture efforts. Tilapia fisheries originated in Africa and the Levant. The accidental and deliberate introductions of tilapia into South and Southeast Asian freshwater lakes have inspired outdoor aquaculture projects in various countries with tropical climates, including Honduras, Papua New Guinea, the Philippines, and Indonesia. Tilapia farm projects in these countries have the highest potential to be "green" or environmentally friendly. In temperate zone localities, tilapia farmers typically need a costly energy source to maintain a tropica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nematode
The nematodes ( or ; ; ), roundworms or eelworms constitute the phylum Nematoda. Species in the phylum inhabit a broad range of environments. Most species are free-living, feeding on microorganisms, but many are parasitic. Parasitic worms (helminths) are the cause of soil-transmitted helminthiases. They are classified along with arthropods, tardigrades and other moulting animals in the clade Ecdysozoa. Unlike the flatworms, nematodes have a tubular digestive system, with openings at both ends. Like tardigrades, they have a reduced number of Hox genes, but their sister phylum Nematomorpha has kept the ancestral protostome Hox genotype, which shows that the reduction has occurred within the nematode phylum. Nematode species can be difficult to distinguish from one another. Consequently, estimates of the number of nematode species are uncertain. A 2013 survey of animal biodiversity suggested there are over 25,000. Estimates of the total number of extant species are su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Obscure Snakehead
The obscure snakehead (''Parachanna obscura'') is a species of snakehead in the family Channidae. This species is found in central Africa along the western coastline from as far north as Senegal to as far south as Zaire and into southwest Sudan. Morphology ''Parachanna obscura'' is a medium-sized carnivorous fish with an elongated shape tapered on both ends, and is covered in medium circular (cycloid) scales. The head, resembling a snake, is long and depressed anteriorly and covered with cycloid scales slightly larger than those scales on the body. The eyes are laterally located and large, helping to locate its prey quickly. Two pairs of nostrils occur on either side of the head. The mouth is large, and because the lower jaw is slightly longer than the upper jaw (giving it an "underbite"), the fish is able to thrust out its lower jaw (protract) to catch its prey. The fish has two rows of teeth. The outer row consists of small, sharp, conical teeth, and the inner row consists of f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hepsetus
''Hepsetus'' is a genus of freshwater ray-finned fishes belonging to the monotypic family Hepsetidae, the African pikes or African pike characins, in the order Characiformes. It was long believed that only a single widespread species existed, ''H. odoe'', but studies in 2011–2013 have shown that this species is restricted to parts of West and Central Africa. The well-known species of southern Africa, including Kafue River, is '' Hepsetus cuvieri''. These predatory fish reach up to in length. A 2024 study found their closest relatives to be the newly-defined family Lepidarchidae, which they diverged from during the Late Cretaceous. The divergence of these two families appears to have been driven by the Trans-Saharan Seaway, which served as a marine barrier between western and eastern Africa at the time. Species There are currently six recognized species in this genus: * '' Hepsetus cuvieri'' ( Castelnau, 1861) * '' Hepsetus kingsleyae'' Vreven, Decru & Snoeks, 2013 * '' Heps ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malapterurus Electricus
''Malapterurus electricus'' is a thickset fish with six mouth barbels and a single fin on its back, just anterior to the rounded tail fin. It is brownish or grayish, irregularly spotted with black, and attains a length and weight of about and ''M. electricus'' is capable of generating and controlling the discharge of up to 450 volts of electricity. It uses its power to defend itself and to capture prey. Distribution In Africa, it occurs in the Nile and tropical Africa and also in Nasarawa state of Nigeria In Lafia(exclusive of Lake Victoria), Lake Turkana, Lake Chad and Senegal basins. Biology Occurs among rock favors standing water. Active at night, feeding mainly on fish stunned by electric shocks. The electric organ, capable of discharging 300–400 V, is derived from pectoral muscle and surrounds almost the entire body. It is used both for prey capture and defense. Life history This is an Old World catfish. It is reputed that Doctors in ancient Egypt used shocks from th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
