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Alestes Stuhlmannii
''Alestes stuhlmannii'' is a species of fish in the family Alestidae. It is endemic to the Ulanga River in Morogoro Region of Tanzania.RUBADA, 1981, Rufiji Basin Study Programme. Study of fisheries in the proposed Steiglers gorge reservoir and the Ulanga floodplain. Atkins Land and Water Management, Cambridge, England.Charlwood, J, D., and Utzinger, J., 1997. Fishery methods and fish diversity in the Ulanga River in south-eastern Tanzania. ''Afr. J. Hydrobiol. Fish'' Vol, No 7, p. 55-64. Named in honor of Franz Stuhlmann (1863–1928), a German zoologist Zoology ( , ) is the scientific study of animals. Its studies include the structure, embryology, classification, habits, and distribution of all animals, both living and extinct, and how they interact with their ecosystems. Zoology is one ... and African explorer, who collected the type specimen in Tanzania. References External links * Froese, R. and D. Pauly, eds''Alestes stuhlmannii''.FishBase. 2015. stuhlmann ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georg Johann Pfeffer
Georg Johann Pfeffer (1854–1931) was a German zoologist, primarily a malacologist, a scientist who studies mollusks. Pfeffer was born in Berlin. In 1887 he became curator of the , which was established in 1843 and destroyed during World War II. Pfeffer's published writings were mainly about cephalopods. The World Register of Marine Species database lists 133 marine Taxon, taxa named by Pfeffer When Pfeffer's name is listed as an authority for a taxon such as the land snail genus ''Lamellaxis'' Hermann Strebel, Strebel & Pfeffer, 1882, his name is ''not'' simply an orthography, orthographic error for the more commonly encountered molluscan authority Pfeiffer, i.e. Ludwig Karl Georg Pfeiffer, who lived 50 years earlier, from 1805 to 1877. Georg Johann Pfeffer also studied amphibians and reptiles, naming several Species description, new species. Two species of reptiles are named in his honor, ''Calamaria pfefferi'' and ''Trioceros, Trioceros pfefferi''.Beolens, Bo; Watkins, Mic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Franz Steindachner
Franz Steindachner (11 November 1834 in Vienna – 10 December 1919 in Vienna) was an Austrian zoologist, ichthyologist, and herpetologist. He published over 200 papers on fishes and over 50 papers on reptiles and amphibians. Steindachner described hundreds of new species of fish and dozens of new amphibians and reptiles. At least seven species of reptile have been named after him. Work and career Being interested in natural history, Steindachner took up the study of fossil fishes on the recommendation of his friend Eduard Suess (1831–1914). In 1860 he was appointed to the position of director of the fish collection at the Natural History Museum, Vienna, a position which had remained vacant since the death of Johann Jakob Heckel (1790–1857). (in German). Steindachner's reputation as an ichthyologist grew, and in 1868 he was invited by Louis Agassiz (1807–1873) to accept a position at the Museum of Comparative Zoology at Harvard University. Steindachner took part i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish
A fish (: fish or fishes) is an aquatic animal, aquatic, Anamniotes, anamniotic, gill-bearing vertebrate animal with swimming fish fin, fins and craniate, a hard skull, but lacking limb (anatomy), limbs with digit (anatomy), digits. Fish can be grouped into the more basal (phylogenetics), basal jawless fish and the more common jawed fish, the latter including all extant taxon, living cartilaginous fish, cartilaginous and bony fish, as well as the extinct placoderms and acanthodians. In a break to the long tradition of grouping all fish into a single Class (biology), class (Pisces), modern phylogenetics views fish as a paraphyletic group. Most fish are ectotherm, cold-blooded, their body temperature varying with the surrounding water, though some large nekton, active swimmers like white shark and tuna can hold a higher core temperature. Many fish can communication in aquatic animals#Acoustic, communicate acoustically with each other, such as during courtship displays. The stud ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alestidae
African tetras (family (biology), family Alestidae, formerly spelled Alestiidae) are a group of Characiformes, characiform fish found exclusively in Africa. This family contains about 18 genera and 119 species. Among the best known members are the Congo tetra, and Hydrocynus, African tigerfish. Although presently found only in Africa, fossil evidence suggests that during the Paleogene, they ranged as far north as southern Europe and as far east as the Arabian subcontinent. Fossil remains date back to potentially the Late Paleocene with ''Hydrocynus'' remains known from Algeria. Alestid-like teeth are also known from the Late Cretaceous (Maastrichtian) of France, and phylogenetic evidence also suggests they diverged around this time. Taxonomy Taxonomy based on Van der Laan 2017 and ''Eschmeyer's Catalog of Fishes'' (2025): * Family Alestidae Cockerell, 1910 ** Genus ''Alestes'' Johannes Peter Müller, Müller & Franz Hermann Troschel, Troschel, 1844 ** Genus ''Alestion'' Tyson R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ulanga River
The Ulanga River, also known as the Kilombero River, rises in the highlands of the southwest of Morogoro Region, Tanzania, on the eastern slope of the East African Rift. The river flows northeast along the northeastern border of the Lindi Region before it flows into the Rufiji River. The Rufiji eventually flows into the Indian Ocean on the southern coast of the Pwani Region. Geology The Ulanga Valley is an intact natural wetland ecosystem comprising myriad rivers, which make up the largest seasonally freshwater lowland floodplain in East Africa. The Ulanga River supplies two thirds of the Rufiji waters. The Ulanga River is formed by the convergence of major rivers coming from the south, that flow north from the mountain ranges of the Njombe and Iringa regions on the eastern slope of the East African Rift and south from the Udzungwa Mountains and Mahenge Mountains. From south the Ruhudji River winds eastward, losing height quite rapidly, to the head of the great floodplain of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morogoro Region
Morogoro Region (''Mkoa wa Morogoro'' in Swahili language, Swahili) is one of Tanzania's 31 administrative Regions of Tanzania, regions. It covers an area of . and is comparable in size to the combined land area of the nation state of Ireland. Morogoro Region is bordered to the north by the Manyara Region and Tanga Region, to the east by the Pwani Region, Pwani and Lindi Region, Lindi Regions, to the south by the Ruvuma Region and to the west by the Iringa Region, Iringa Njombe Region, Njombe and Dodoma Region, Dodoma Regions. The regional capital is the municipality of Morogoro. According to the 2022 national census, the region had a population of 3,197,104. Geography The area is found in the Mid-Eastern portion of mainland Tanzania and is situated between latitudes 5° 58' and 10' south of the equator and between longitudes 35° 25' and 38° 30' east Greenwich. 4,623,005 acres, or 4.9% of the area of Tanzania's Mainland, is the size of the Morogoro region (94,278,400 ha). The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tanzania
Tanzania, officially the United Republic of Tanzania, is a country in East Africa within the African Great Lakes region. It is bordered by Uganda to the northwest; Kenya to the northeast; the Indian Ocean to the east; Mozambique and Malawi to the south; Zambia to the southwest; and Rwanda, Burundi, and the Democratic Republic of the Congo to the west. According to a 2024 estimate, Tanzania has a population of around 67.5 million, making it the most populous country located entirely south of the equator. Many important hominid fossils have been found in Tanzania. In the Stone and Bronze Age, prehistoric migrations into Tanzania included South Cushitic languages, Southern Cushitic speakers similar to modern day Iraqw people who moved south from present-day Ethiopia; Eastern Cushitic people who moved into Tanzania from north of Lake Turkana about 2,000 and 4,000 years ago; and the Southern Nilotic languages, Southern Nilotes, including the Datooga people, Datoog, who originated fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Franz Stuhlmann
Franz Ludwig Stuhlmann (29 October 1863 – 19 November 1928) was a German naturalist, zoologist and African explorer, born in Hamburg. Biography Stuhlmann was born and grew up in Hamburg where his father was an architect. He took a great interest in natural history while at school and went on to study natural sciences at Tübingen and Freiburg, earning his doctorate at the latter. Concentrating on zoology, he also undertook studies at the University of Kiel before being employed as a demonstrator at the Zoological Institute of Würzburg in 1887. He did not stay long, however, but left Germany the following year on what would be the first voyage in a long series of expeditions. He carried on his work well beyond retirement age and contracted cancer and died in November 1928 following an operation. Expeditions After studying at Tübingen and Freiburg, he went to East Africa in 1888, and during the revolt of the Arabs in 1890 entered the German corps of defense as a lieutenant, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Germans
Germans (, ) are the natives or inhabitants of Germany, or sometimes more broadly any people who are of German descent or native speakers of the German language. The Basic Law for the Federal Republic of Germany, constitution of Germany, implemented in 1949 following the end of World War II, defines a German as a German nationality law, German citizen. During the 19th and much of the 20th century, discussions on German identity were dominated by concepts of a common language, culture, descent, and history.. "German identity developed through a long historical process that led, in the late 19th and early 20th centuries, to the definition of the German nation as both a community of descent (Volksgemeinschaft) and shared culture and experience. Today, the German language is the primary though not exclusive criterion of German identity." Today, the German language is widely seen as the primary, though not exclusive, criterion of German identity. Estimates on the total number of Germ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zoologist
Zoology ( , ) is the scientific study of animals. Its studies include the structure, embryology, classification, habits, and distribution of all animals, both living and extinct, and how they interact with their ecosystems. Zoology is one of the primary branches of biology. The term is derived from Ancient Greek , ('animal'), and , ('knowledge', 'study'). Although humans have always been interested in the natural history of the animals they saw around them, and used this knowledge to domesticate certain species, the formal study of zoology can be said to have originated with Aristotle. He viewed animals as living organisms, studied their structure and development, and considered their adaptations to their surroundings and the function of their parts. Modern zoology has its origins during the Renaissance and early modern period, with Carl Linnaeus, Antonie van Leeuwenhoek, Robert Hooke, Charles Darwin, Gregor Mendel and many others. The study of animals has largely mov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alestes
''Alestes'' is a genus of freshwater ray-finned fishes belonging to the family Alestidae, known as the "African Characidae" as they are found exclusively on that continent. As suggested by that name, they Alestidae was formerly included in Characidae. ''Myletes'' was a synonym of ''Alestes'', which was used for various South American serrasalmids too but this name was suppressed by Opinion 1813 of the ICZN. Within the Lake Chad basin, ''Alestes'' and '' Hydrocynus'', collectively known as ''salanga'', are lightly smoked and dried. by A. Staunch, presented at the Symposium on the Evaluation of Fishery Resources in the Development and Management of Inland Fisheries, 1972 (hosted by the |
