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Bryconops Munduruku
''Bryconops munduruku'' is a small freshwater fish of the family Iguanodectidae that lives in the rivers of South America. Its adipose fin is black, with a clear base, and it has two humeral spots, which is a feature it shares with few congeners. Its fins are a variety of yellow, red, black, and clear, and mature males have hooks on select fin-rays. Originally cited from the lower Rio Tapajós, ''B. munduruku's'' name pays homage to its type locality. Known as the Tapajós-Tapera, a denomination of Munduruku Indians (an indigenous culture of Brazil) formed the settlement that became the municipality from whence ''B. munduruku'' was described, Aveiro. Taxonomy ''Bryconops munduruku'' is considered a member of the subgenus ''Creatochanes'' in the genus ''Bryconops''. It has been regarded as such since its description in 2015. It is sometimes listed as a characin, or member of the family Characidae, but a study in 2011 moved the genera ''Bryconops'', ''Piabucus'', and ''Iguanod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adipose Fin
Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish. They are covered with skin and joined together either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as seen in sharks. Apart from the tail or caudal fin, fish fins have no direct connection with the spine and are supported only by muscles. Their principal function is to help the fish swim. Fins located in different places on the fish serve different purposes such as moving forward, turning, keeping an upright position or stopping. Most fish use fins when swimming, flying fish use pectoral fins for gliding, and frogfish use them for crawling. Fins can also be used for other purposes; male sharks and mosquitofish use a modified fin to deliver sperm, thresher sharks use their caudal fin to stun prey, reef stonefish have spines in their dorsal fins that inject venom, anglerfish use the first spine of their dorsal fin like a fishing rod to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyphessobrycon Agulha
''Hyphessobrycon agulha'' (also known as the red-tailed flag tetra) is a species of tetra in the family Characidae. As a freshwater fish, it inhabits the basin of the Madeira River in Brazil along with parts of Peru and Bolivia, and it reaches a maximum length of . Though it is mainly found in the wild, it is occasionally kept by fishkeepers and is sometimes confused with the neon tetra. The fish is primarily an insectivore, though it does eat vegetable matter. It is considered to form a group with other species in ''Hyphessobrycon ''Hyphessobrycon'' is a genus of freshwater fish in the family Characidae. These species are among the fishes known as tetras. The genus is distributed in the Neotropical realm from southern Mexico to Río de la Plata in Argentina. Many of thes ...'' as they share a dark stripe running lengthwise. While its name comes from the native name for this species along the Madeira River in Brazil, the fish also occurs in Colombia and Peru. References ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sympatry
In biology, two related species or populations are considered sympatric when they exist in the same geographic area and thus frequently encounter one another. An initially interbreeding population that splits into two or more distinct species sharing a common range exemplifies sympatric speciation. Such speciation may be a product of reproductive isolation – which prevents hybrid offspring from being viable or able to reproduce, thereby reducing gene flow – that results in genetic divergence. Sympatric speciation may, but need not, arise through secondary contact, which refers to speciation or divergence in allopatry followed by range expansions leading to an area of sympatry. Sympatric species or taxa in secondary contact may or may not interbreed. Types of populations Four main types of population pairs exist in nature. Sympatric populations (or species) contrast with parapatric populations, which contact one another in adjacent but not shared ranges and do n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tapajós National Forest
The Tapajós National Forest ( pt, Floresta Nacional do Tapajós) is a Brazilian national forest in the state of Pará, Brazil. It supports sustainable exploitation of the natural resources in an area of Amazon rainforest. Location The Tapajós National Forest has an area of . It is in the municipalities of Belterra, Aveiro, Rurópolis and Placas in the state of Pará. The unit is bounded by the Tapajós, the Cupari River, a tributary of the Tapajós, and the BR-163 Santarém–Cuiabá road. Part of the forest drains into the Tapajós to the west, and part drains into the Curuá Una River basin to the east. The Moju River, a tributary of the Curuá-Una, rises in the forest. The side of the forest along the banks of the Tapajós has elevations of about cut by ravines and deep valleys. The flat areas are periodically flooded in the rainy season. Further from the river the forest is on the Tapajós-Xingu plateau, with elevations of . Environment The Tapajós National Fores ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bryconops Giacopinii
''Bryconops giacopinii'' is a mid-sized species of freshwater fish in the family Iguanodectidae. It is the largest member of the genus ''Bryconops'', and is therefore difficult to confuse with any of its congeners. With a diet that consists largely of land-dwelling insects, it serves as an important link between the terrestrial and aquatic aspects of its native range. Description ''Bryconops giacopinii'' reaches 18 cm (7 in) long in total length (with the tail fin included), which makes it the longest member of its genus. A close contender is the type species of ''Bryconops'', '' B. alburnoides'', which reaches 15 cm (6 in) in standard length (tail fin left out). ''B. giacopinii'' is a deep-bodied and robust fish, with silvery scales and a well-defined caudal ocellus (eyespot on the tail) in yellow or orange. ''Bryconops giacopinii'' bears a notable resemblance to ''Bryconops caudomaculatus'', which was remarked upon in its original description. The original also notes that ''B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bryconops Melanurus
''Bryconops melanurus'', sometimes called the tail-light tetra, is a small species of freshwater fish from South America that primarily preys on insects. It lives in small schools and is an active swimmer, which means that it requires open space in its habitat. Nonetheless, it does not demonstrate a strong preference for any one biotope within its native range. Description ''Bryconops melanurus'' reaches a maximum total length of about 13.2 cm (5.2 in), which puts it on the larger side of the genus '' Bryconops''. The head is slender, with a pointed snout, and ''B. melanurus'' lacks a humeral spot of the kind frequently seen in congeners (such as '' B. humeralis'' and '' B. inpai''). ''B. melanurus'' shares aspects of its jaw structure, which is rather lengthened, with ''B. inpai'', '' B. affinis'', and '' B. giacopinii''. (This was used to place ''giacopinii'' in the genus ''Bryconops'' instead of its originally described ''Autanichthys''.) ''Bryconops melanurus'' is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bryconops Durbinae
''Bryconops durbinae'', sometimes listed under the name ''Bryconops durbini'', is a small species of freshwater fish in the family Iguanodectidae. It is the smallest species of the genus ''Bryconops''. Like all members of Iguanodectidae, it inhabits rivers in the upper half of South America. Description ''Bryconops durbinae'' is small and slender, with a large mouth in comparison to the body. It is the smallest member of the genus ''Bryconops'' at 3.1 cm (1.2 in) in standard length; the second-smallest is '' Bryconops disruptus'', at 6.4 cm (2.5 in). Its fins are generally hyaline (transparent), though it does bear a caudal ocellus (eyespot on the tail) that is transparent when preserved in alcohol, but ranges from red to yellow in life. Its caudal fin is darker than the rest, which makes said ocellus more obvious upon examination. In terms of body coloration, ''Bryconops durbinae'' is generally an iridescent silver, with a black lateral stripe down each side underlined by a s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pará
Pará is a state of Brazil, located in northern Brazil and traversed by the lower Amazon River. It borders the Brazilian states of Amapá, Maranhão, Tocantins, Mato Grosso, Amazonas and Roraima. To the northwest are the borders of Guyana and Suriname, to the northeast of Pará is the Atlantic Ocean. The capital and largest city is Belém, which is located at the mouth of the Amazon. The state, which is home to 4.1% of the Brazilian population, is responsible for just 2.2% of the Brazilian GDP. Pará is the most populous state of the North Region, with a population of over 8.6 million, being the ninth-most populous state in Brazil. It is the second-largest state of Brazil in area, at , second only to Amazonas upriver. Its most famous icons are the Amazon River and the Amazon Rainforest. Pará produces rubber (extracted from natural rubber tree groves), cassava, açaí, pineapple, cocoa, black pepper, coconut, banana, tropical hardwoods such as mahogany, and minerals ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brazil
Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area and the seventh most populous. Its capital is Brasília, and its most populous city is São Paulo. The federation is composed of the union of the 26 states and the Federal District. It is the largest country to have Portuguese as an official language and the only one in the Americas; one of the most multicultural and ethnically diverse nations, due to over a century of mass immigration from around the world; and the most populous Roman Catholic-majority country. Bounded by the Atlantic Ocean on the east, Brazil has a coastline of . It borders all other countries and territories in South America except Ecuador and Chile and covers roughly half of the continent's land area. Its Amazon basin includes a vast tropical forest, ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bryconops Gracilis
''Bryconops gracilis'' is a small species of freshwater fish from the rivers of South America. It is one of multiple species for which the common name "lambari" is used. Though not well-studied, it has been re-described in recent years in order to differentiate it from ''Bryconops alburnoides'', a congener to which it bears a strong resemblance. Description The holotype of ''Bryconops gracilis'' - the very first collected specimen - was reported at 7.5 cm (2.9 in) in SL (standard length, with the length of the tail fin excluded). Further specimens of ''B. gracilis'' range from 6.1 to 12.3 cm (2.4 to 4.8 in) SL. Like the rest of ''Bryconops'', ''B. gracilis'' has a slender body reminiscent of a minnow's."THE FISH FAMILIES". Field Guide to the Fishes of the Amazon, Orinoco, and Guianas, edited by Peter van der Sleen and James S. Albert, Princeton: Princeton University Press, 2017, pp. 95-96. https://doi.org/10.1515/9781400888801-009 Its body is also on the shallower side when c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bryconops Cyrtogaster
''Bryconops cyrtogaster'' is a midsize species of freshwater fish found in the rivers of South America. It is overall silver, with an indistinct dark patch at the base of the tail fin that spreads onto the fin rays slightly. Originally described in 1926 under a different baisonym, it was the subject of a redescription in June 2020. Description ''Bryconops cyrtogaster'' is about 12 cm (4.7 in) in total length, which makes it slightly longer than the average member of its genus. Its scales are generally silver, with a faint lateral line towards its back half. One of its identifying features is a diffuse dark patch on the caudal peduncle that bleeds into the upper lobe of the caudal fin. It also has a single humeral spot above each pectoral fin. The snout is short and the eye wide in comparison, the latter larger than the former. The mouth itself is terminal, equipped with multicuspid teeth (a feature seen in all members of ''Bryconops'', as well as sister clade Iguanod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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