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Bryconops
''Bryconops'' is a genus of freshwater fish in the family Iguanodectidae from South America. It consists of small fish, all under half-a-foot long, with slender bodies and silvery scales, though there is some mild color variation. Several species can be identified by way of a humeral patch (a mark near the pectoral fin), and others have a reddish ocellus, or eyespot, on one or both lobes of the dorsal fin. Many ''Bryconops'' prefer clearwater environments with a strong current, though some are partial to slow-moving blackwater, and several are endemic to their locale. The majority of species are from Brazil or Venezuela. Rivers and river basins that house species of ''Bryconops'' include the Tapajos, Orinoco, Tocantins, Negro, and Madeira. Few species of ''Bryconops'' have been evaluated as far as conservation status, but most of them are believed to be low-risk species. The greatest threats to population levels come almost entirely in the form of anthropogenic hazards, inclu ... [...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 si ... [...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 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 Inpai
''Bryconops inpai'' is a small freshwater fish native to the rivers of South America. It only lives in two particular river systems - the Casiquiare and Negro - which means that its range is restricted to the northern half of the continent. It has indistinct humeral spots (patches near the pectoral fins), and is bluish-silver in life, which is unusual for members of ''Bryconops''; they are more often plain silver or greenish-silver. Because it is native to water types with little endemic plant life, most of its diet originates outside of the river system. It primarily preys on insects, such as ants and termites, that fall from trees above the water, and sometimes gets the opportunity to prey on aquatic larvae. Specimens will eat plants if available, mostly seeds and flowers. Description Some of the first specimens reached a length of 9.78 cm (3.85 in) in standard length (without the tail fin included). More often than not, however, ''B. inpai'' reaches a maximum of 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iguanodectidae
Iguanodectidae is a family of freshwater fish in the order Characiformes that lives in South America. It is home to the subfamily Iguanodectinae (Eigenmann, 1909) and the monotypic ''Bryconops'' clade. Several species in the family, such as the green line lizard tetra (''Iguanodectes spilurus''), the tailspot tetra (''Bryconops caudomaculatus''), and the orangefin tetra (''Bryconops affinis''), are sometimes taken as aquarium fish. Description Iguanodectids are generally small, and are brightly colored or reflective, making them moderately-popular ornamental fish. They range from 3.1 cm to 15 cm SL (standard length). They are rather narrow in shape, somewhat resembling minnows; ichthyologist Carl H. Eigenmann compared them to smelt. Habitat Iguanodectids are found in South America, spread all across the northern half of the continent. Though they primarily inhabit freshwater, Iguanodectid fishes are known to tolerate brackish water as well. Habitat destruction, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bryconops Magoi
''Bryconops magoi'' is a small species of fish from South America. It is only found in Venezuela, along with sister species ''Bryconops collettei''. Its tail-fin markings help to differentiate it from various congeners, as does its fairly restricted range. It is most closely related to ''B. collettei'' and ''Bryconops caudomaculatus'', and it was once considered synonymous with the latter; specimens of ''B. magoi'' and ''B. collettei'' both were routinely misidentified as ''B. caudomaculatus'' before being given species distinction. Description ''B. magoi'' has a maximum size within the range of 7.0 cm (2.8 in), which places it to the smaller side of the genus ''Bryconops'' as a whole. Its caudal fin (tail fin) bears a rather diffuse ocellus (eyespot), the upper half of which is colored red; this is a similarity it shares with B. collettei. This eyespot is not well-defined, but is clear against the dark coloration of the caudal fin overall (which is dense in melanophores). Its s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bryconops Marabaixo
''Bryconops marabaixo'' is a small freshwater fish from the lower Amazon basin, native to the Rio Jari. It is small and silvery, with a dark-gray back, and its fins are mostly clear, though the caudal fin has a dark stripe on the lower margin of the dorsal lobe, and a spot of red pigment just above that. Like many other members of ''Bryconops'', it has a humeral spot, which is a mark near each pectoral fin. ''Bryconops marabaixo'' was officially named in 2020, though it was the secondary focus of the nominal article. The study that described it had the primary purpose of solidifying a proper description for congener ''Bryconops cyrtogaster'', to which it has some superficial resemblance. Description ''Bryconops marabaixo'' is a relatively small member of its genus. The holotype, or first collected specimen, measured 6.17cm SL (standard length), and further specimens measured 5.04-6.09 cm SL. Most members of ''Bryconops'' are between 6 and 8 cm SL. The body, while compressed, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tailspot Tetra
The tailspot tetra (''Bryconops caudomaculatus'') is a freshwater fish that lives in the coastal river regions of upper South America. Both its common and scientific names reference the distinct spot of color present on the tail fin, which is one of its defining characteristics. It is a small fish, reaching 4.8 in (12.4 cm) at its longest. Despite its small size, it is an active swimmer, with a preference for fast-flowing waters. Description The tailspot tetra, like the rest of the genus ''Bryconops'', has a slender body described as "smelt-like", similar to members of sister genus ''Piabucus''. It reaches 4.8 in (12.4 cm) in total length (with the tail fin included), and a corresponding weight of 20.1 grams. Its back scales are tinted orange to dark-orange, fading into silver on the belly when the fish is alive. Upon close inspection, the scales are also revealed to have a scattering of minute dots. The spot of bright orange on the basal half of the caudal fin is what gives th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orangefin Tetra
The orangefin tetra (''Bryconops affinis'') is a small species of freshwater fish from South America that belongs to the family Iguanodectidae. Though common in its native range, it seems to prefer fast-flowing and shallow creeks. It is an active swimmer that feeds on plant material and various invertebrates, sometimes jumping out of the water to catch prey above the surface. It has a peaceful demeanor, living in schools and inhabiting the same areas as various other fish species. When it spawns, it prefers environments with plentiful vegetation. Its eggs are adhesive, and are released in batches instead of all at once. It looks quite similar to one of its congeners, '' B. melanurus'', hence the specific epithet "''affinis''" (which means "close to"). Another common name is "orangefin characin", but this is inaccurate; a characin is any fish of the family Characidae, and the orangefin tetra belongs to the family Iguanodectidae. However, it used to be classified as a member of Cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bryconops Sapezal
''Bryconops sapezal'' is a small freshwater fish native to the Rio Tapajós basin of Brazil. It is one of the more recent additions to its genus, described in 2018, and has a name that means "covered in sapê", or thatching. This originates from the Sapezal municipality of Mato Grosso, Brazil, which is type locality of ''B. sapezal''. Description ''Bryconops sapezal'' ranges from 3.03 to 6.99cm SL (standard length), with the largest specimen at 9.12 cm SL. Most species of ''Bryconops'' are within the 6 to 8 cm SL range. It is a rather slender and elongate species, with a relatively small head and a body that tapers away from the origin of the dorsal fin. The scales are dark-gray on the back, silver with a bluish tint on the sides, and pale on the belly. A blue tint is rare in ''Bryconops'' (only otherwise seen in '' B. inpai'' and '' B. marabaixo''); most species are plain silvery or slightly greenish. The lower jaw ranges from dark-yellow to black. The dorsal fin is red, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bryconops Chernoffi
''Bryconops chernoffi'' is a species of freshwater fish that inhabits the rivers of Brazil. Specifically, it is found in the Rio Maicuru and Rio Ipixuna; the latter is a tributary of the former, which is a tributary of the Amazon river main. ''B. chernoffi'' demonstrates a preference for clear-water streams with sandy and rocky bottoms. ''Bryconops chernoffi'' is one of the more recent contributions to the genus, and is named after Professor Barry Chernoff, an American ichthyologist responsible for many contributions to the knowledge of the genus ''Bryconops''. It is known to peacefully live alongside various other freshwater fish. Description ''Bryconops chernoffi'' ranges from 3.86–7.59 cm SL (standard length), with a holotype 5.96 cm SL. This places it slightly to the smaller side of average for a member of ''Bryconops'', as fish therein are usually between 6 and 8 inches SL. It has a somewhat convex underside, with the deepest point of its body located just in front of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bryconops Disruptus
''Bryconops disruptus'' is a small freshwater fish of the family Iguanodectidae. It is only found in the Rio Negro in South America. Like the rest of the genus ''Bryconops'', ''B. disruptus'' is silvery in color, with a relatively deep chest and a notable set of teeth. The specific epithet "disruptus" refers to the incomplete lateral line. Description ''Bryconops disruptus'' is one of the smallest members of ''Bryconops'', measuring about 6.4 cm (2.5 in) in standard length. The only species smaller is ''Bryconops durbinae'', which reaches 3.1 cm (1.2 in) in standard length. It is similar in coloration to ''Bryconops caudomaculatus'', including a similar caudal ocellus (an eyespot on the tail fin), but is overall a darker silver and has a more consistently incomplete lateral line. The number of pored lateral line scales varies wildly, ranging from 9 to 23. Due to the presence of a caudal ocellus, ''B. disruptus'' bears an outward resemblance to ''B. caudomac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
