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Mikrogeophagus
''Mikrogeophagus'' is a genus of small cichlids native to the Amazon basin in South America. M. ''ramirezi'' is native to the Llanos of the Orinoco basin. M. ''altispinosus'' is from the Rio Mamoré and the middle and lower Rio Guaporé basins in Bolivia and Brazil. The third form of Mikrogeophagus, M. '' maculicauda,''is found in the Rio Pindatuba (upper Rio Guaporé basin.) M.''ramirezi'' and M. ''altispinosus'' are popular with aquarists, especially ''M. ramirezi''. These species spawn on flat rocks or leaves and not in caves like fishes from the closely related cichlid genus ''Apistogramma''. Species The currently recognized species in this genus are: * ''Mikrogeophagus altispinosus'' ( Haseman, 1911) (Bolivian Ram) * ''Mikrogeophagus ramirezi'' ( G. S. Myers & Harry, 1948) (ram cichlid) * ''Mikrogeophagus maculicauda ''Mikrogeophagus'' is a genus of small cichlids native to the Amazon basin in South America. M. ''ramirezi'' is native to the Llanos of the Orinoco bas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mikrogeophagus Ramirezi
The ram cichlid, ''Mikrogeophagus ramirezi'', is a species of freshwater fish endemic to the Orinoco River basin, in the savannahs of Venezuela and Colombia in South America. The species has been examined in studies on fish behaviour and is a popular aquarium fish, traded under a variety of common names, including ram, blue ram, German blue ram, Asian ram, butterfly cichlid, Ramirez's dwarf cichlid, dwarf butterfly cichlid and Ramirezi.Linke H, Staeck L (1994) ''American cichlids I: Dwarf Cichlids. A handbook for their identification, care and breeding.'' Tetra Press. Germany. The species is a member of the family Cichlidae and subfamily Geophaginae. Description Wild ram cichlids are often more colorful than the tank-bred fish, which suffer from poor breeding and also being injected with hormones for more color, although this makes as many as one in four males infertile. Male specimens of the ram usually have the first few rays of the dorsal fin extended, but breeding has mad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mikrogeophagus Maculicauda
''Mikrogeophagus'' is a genus of small cichlids native to the Amazon basin in South America. M. ''ramirezi'' is native to the Llanos of the Orinoco basin. M. ''altispinosus'' is from the Rio Mamoré and the middle and lower Rio Guaporé basins in Bolivia and Brazil. The third form of Mikrogeophagus, M. '' maculicauda,''is found in the Rio Pindatuba (upper Rio Guaporé basin.) M.''ramirezi'' and M. ''altispinosus'' are popular with aquarists, especially ''M. ramirezi''. These species spawn on flat rocks or leaves and not in caves like fishes from the closely related cichlid genus '' Apistogramma''. Species The currently recognized species in this genus are: * ''Mikrogeophagus altispinosus'' ( Haseman, 1911) (Bolivian Ram) * ''Mikrogeophagus ramirezi'' ( G. S. Myers & Harry, 1948) (ram cichlid) * ''Mikrogeophagus maculicauda ''Mikrogeophagus'' is a genus of small cichlids native to the Amazon basin in South America. M. ''ramirezi'' is native to the Llanos of the Orinoco b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mikrogeophagus Altispinosus
''Mikrogeophagus altispinosus'' is a species of fish endemic to the Amazon River basin in Brazil and Bolivia. The species is part of the family Cichlidae and subfamily Geophaginae. It is a popular aquarium fish, traded under the common names Bolivian butterfly, Bolivian ram, Bolivian ram cichlid, and ruby crown cichlid.Richter H-J (1989) ''Complete book of dwarf cichlids.'' Tropical Fish Hobbyist, USALinke H, Staeck L (1994) ''American cichlids I: Dwarf Cichlids. A handbook for their identification, care and breeding.'' Tetra Press. Germany. Range, geographic variants, and habitat The species occurs in the soft, acidic, warm waters of the Mamoré and Guaporé River drainages in Bolivia and Brazil. Whether one morph of ''M. altispinosus'', known to aquarium hobbyists as ''Mikrogeophagus ''sp. "Zweifleck/Two-patch", found in the upper Rio Guaporé in Brazil is a different species remains unclear.Stawikowski, Rainer, Ingo Koslowski & Volker Bohnet (editors): Sudamerikanische Zw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mikrogeophagus
''Mikrogeophagus'' is a genus of small cichlids native to the Amazon basin in South America. M. ''ramirezi'' is native to the Llanos of the Orinoco basin. M. ''altispinosus'' is from the Rio Mamoré and the middle and lower Rio Guaporé basins in Bolivia and Brazil. The third form of Mikrogeophagus, M. '' maculicauda,''is found in the Rio Pindatuba (upper Rio Guaporé basin.) M.''ramirezi'' and M. ''altispinosus'' are popular with aquarists, especially ''M. ramirezi''. These species spawn on flat rocks or leaves and not in caves like fishes from the closely related cichlid genus ''Apistogramma''. Species The currently recognized species in this genus are: * ''Mikrogeophagus altispinosus'' ( Haseman, 1911) (Bolivian Ram) * ''Mikrogeophagus ramirezi'' ( G. S. Myers & Harry, 1948) (ram cichlid) * ''Mikrogeophagus maculicauda ''Mikrogeophagus'' is a genus of small cichlids native to the Amazon basin in South America. M. ''ramirezi'' is native to the Llanos of the Orinoco bas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cichlid
Cichlids are fish from the family Cichlidae in the order Cichliformes. Cichlids were traditionally classed in a suborder, the Labroidei, along with the wrasses ( Labridae), in the order Perciformes, but molecular studies have contradicted this grouping. The closest living relative of cichlids is probably the convict blenny, and both families are classified in the 5th edition of ''Fishes of the World'' as the two families in the Cichliformes, part of the subseries Ovalentaria. This family is both large and diverse. At least 1,650 species have been scientifically described, making it one of the largest vertebrate families. New species are discovered annually, and many species remain undescribed. The actual number of species is therefore unknown, with estimates varying between 2,000 and 3,000. Many cichlids, particularly tilapia, are important food fishes, while others, such as the ''Cichla'' species, are valued game fish. The family also includes many popular freshwater aquariu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geophagini
Geophagini is a tribe of cichlids from the subfamily Cichlinae, the American cichlids. It is the sister taxon to the clade which includes the Cichlasomatini and Heroini. Fishes in the Geophagini are distributed from Panama south to Argentina, it is the most speciose of the seven tribes within the Cichlinae and it is subdivided into three sub-tribes, Acarichthyina, Crenicaratina, and Geophagina which together contain over 200 species. Geophagines show morphological and behavioural specialisations to enable them to sift the substrates within their mouths so that they can separate benthic invertebrates from substrates dominated by sand or silt. Classification The Geophagini are classified as follows: * Subtribe Acarichthyina Kullander, 1998 ** Genus '' Acarichthys'' C. H. Eigenmann, 1912 ** Genus ''Guianacara'' Kullander & Nijssen, 1989 * Subtribe Crenicaratina Kullander, 1998 ** Genus ''Biotoecus'' C. H. Eigenmann & C. H. Kennedy, 1903 ** Genus ''Crenicara'' Steindachner, 1875 * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jens Meulengracht-Madsen
Jens may refer to: * Jens (given name), a list of people with the name * Jens (surname), a list of people * Jens, Switzerland, a municipality * 1719 Jens, an asteroid See also * Jensen (other) Jensen may refer to: People *Jensen (surname) *Jensen (given name) *Jensen (gamer), Danish professional ''League of Legends'' player Places Australia * Jensen Oval, Sydney, Australia, a soccer park * Jensen, Queensland, a suburb of Townsville ... * Jenssi {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amazon Basin
The Amazon basin is the part of South America drained by the Amazon River and its tributaries. The Amazon drainage basin covers an area of about , or about 35.5 percent of the South American continent. It is located in the countries of Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, Suriname, and Venezuela. Most of the basin is covered by the Amazon rainforest, also known as Amazonia. With a area of dense tropical forest, this is the largest rainforest in the world. Geography The Amazon River begins in the Andes Mountains at the west of the basin with its main tributary the Marañón River and Apurimac River in Peru. The highest point in the watershed of the Amazon is the second biggest peak of Yerupajá at . With a length of about before it drains into the Atlantic Ocean, it is one of the two longest rivers in the world. A team of scientists has claimed that the Amazon is longer than the Nile, but debate about its exact length continues. The Amazon system ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South America
South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southern subregion of a single continent called America. South America is bordered on the west by the Pacific Ocean and on the north and east by the Atlantic Ocean; North America and the Caribbean Sea lie to the northwest. The continent generally includes twelve sovereign states: Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Guyana, Paraguay, Peru, Suriname, Uruguay, and Venezuela; two dependent territories: the Falkland Islands and South Georgia and the South Sandwich Islands; and one internal territory: French Guiana. In addition, the ABC islands of the Kingdom of the Netherlands, Ascension Island (dependency of Saint Helena, Ascension and Tristan da Cunha, a British Overseas Territory), Bouvet Island ( dependency of Norway), Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orinoco River
The Orinoco () is one of the longest rivers in South America at . Its drainage basin, sometimes known as the Orinoquia, covers , with 76.3 percent of it in Venezuela and the remainder in Colombia. It is the fourth largest river in the world by discharge volume of water. The Orinoco River and its tributaries are the major transportation system for eastern and interior Venezuela and the Llanos of Colombia. The environment and wildlife in the Orinoco's basin are extremely diverse. Etymology The river's name is derived from the Warao term for "a place to paddle", itself derived from the terms ''güiri'' (paddle) and ''noko'' (place) i.e. a navigable place. History The mouth of the Orinoco River at the Atlantic Ocean was documented by Christopher Columbus on 1 August 1498, during his third voyage. Its source at the Cerro Delgado–Chalbaud, in the Parima range, was not explored until 453 years later, in 1951. The source, near the Venezuelan–Brazilian border, at ab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquarists
Fishkeeping is a popular hobby, practiced by aquarists, concerned with keeping fish in a home aquarium or garden pond. There is also a piscicultural fishkeeping industry, serving as a branch of agriculture. Origins of fishkeeping Fish have been raised as food in pools and ponds for thousands of years. Brightly colored or tame specimens of fish in these pools have sometimes been valued as pets rather than food. Many cultures, ancient and modern, have kept fish for both functional and decorative purposes. Ancient Sumerians kept wild-caught fish in ponds, before preparing them for meals. Depictions of the sacred fish of Oxyrhynchus kept in captivity in rectangular temple pools have been found in ancient Egyptian art. Similarly, Asia has experienced a long history of stocking rice paddies with freshwater fish suitable for eating, including various types of catfish and cyprinid. Selective breeding of carp into today's popular and completely domesticated koi and fancy goldfish be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spawn (biology)
Spawn is the Egg cell, eggs and Spermatozoa, sperm released or deposited into water by aquatic animals. As a verb, ''to spawn'' refers to the process of releasing the eggs and sperm, and the act of both sexes is called spawning. Most aquatic animals, except for aquatic mammals and marine reptile, reptiles, reproduce through the process of spawning. Spawn consists of the reproductive cells (gametes) of many aquatic animals, some of which will become fertilized and produce offspring. The process of spawning typically involves females releasing Ovum, ova (unfertilized eggs) into the water, often in large quantities, while males simultaneously or sequentially release spermatozoa (milt) to fertilize the eggs. Most fish reproduce by spawning, as do most other aquatic animals, including crustaceans such as crabs and shrimps, molluscs such as oysters and squid, echinoderms such as sea urchins and sea cucumbers, amphibians such as frogs and newts, aquatic insects such as mayflies and mos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
