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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] |
Iguanodectes
''Iguanodectes'' is a genus of freshwater fish found in tropical South America, with eight currently described species. They are all small tetras, none longer than 5 inches, and often have attractive silvery or striped scales, which makes them a target for the ornamental fish industry. Alongside the genus ''Piabucus'', it is in the subfamily Iguanodectinae, which in turn is in the family Iguanodectidae. The genus ''Bryconops'', which is also in Iguanodectidae, makes up a sister clade to Iguanodectinae. Description Members of ''Iguanodectes'' are relatively slender, shaped somewhat like minnows; ichthyologists Carl H. Eigenmann and James Erwin Böhlke both compared them to smelt in general body composition. The largest (''Iguanodectes variatus'') reaches 10.3 cm (4.1 in) at a maximum in SL, and the smallest (''Iguanodectes gracilis'') 4.6 cm (1.6 in). This size makes them relatively easy to keep in captivity, and so several species of ''Iguanodectes'' - as with the whole subfamil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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] |
Iguanodectinae
Iguanodectinae is a subfamily of small freshwater fish in the family Iguanodectidae. They are most prominently found in the Amazon river basin and its major tributaries, but they are also known from the Tocantins, Orinoco, and Paraguay rivers. It has two genera, ''Piabucus'' and ''Iguanodectes''. Some species in the subfamily are taken from the wild for aquariums, like the red- and green-line lizard tetras (''Iguanodectes geisleri'' and ''Iguanodectes spilurus'', respectively). There is minor, but ongoing, debate regarding its taxonomy. Description Members of Iguanodectinae are generally fairly small, none more than 13 cm in length. Members of ''Piabucus'' are slightly larger than members of ''Iguanodectes'', reaching a maximum of 12.9 cm (5.1 in), while members of ''Iguanodectes'' only reach 10.3 cm (4.1 in). They are slender and rather elongate in body shape, comparable to minnows; ichthyologist Carl H. Eigenmann, who named the subfamily, likened them to smelt. Their scales ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piabucus
''Piabucus'' is a genus of freshwater tetras in the family Iguanodectidae. All three species are found in South America, largely the Amazon and its major tributaries. None of them are longer than half a foot long, with the largest reaching a maximum size of 12.9 cm (5.0 in), and they are slender, with relatively deep chests and long pectoral fins. Their scales are pale or silvery, with lateral lines that stand out. At least one species, ''Piabucus dentatus'', is known to be collected for the aquarium industry. All three species are sometimes given the collective name "chin tetras" by sellers, in reference to markings on the lower jaw. However, none of the species are considered endangered, so capture of wild specimens is not an immediate threat to population numbers. As well as this, collection is not happening at a high enough rate to be of any concern. ''Piabucus'' has a close relative in the genus ''Iguanodectes''. The two are paired in the subfamily Iguanodectinae, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bryconops Durbini
''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 Alburnoides
''Bryconops alburnoides'' is a small freshwater fish, approximately 6 inches long at its largest, that lives in the rivers of South America. It has a slender body, with a yellowish dorsal fin and yellow-tinged back scales that fade into silver on its belly. It is largely an insectivore that picks land-dwelling insects from the riverbanks, though it eats much more whenever rain washes prey into the water. Description ''Bryconops alburnoides'' reaches 15 cm (5.9 inches) at a maximum in standard length (tail fin not included), with a generally elongated body.Machado-Allison, Antonio & Buckup, Paulo & Chernoff, Barry & Royero, Ramiro. (1993). Las especies del genero Bryconops Kner, 1858 en Venezuela (Teleostei, Characiformes)'. 14. 1-20. The genus ''Bryconops'' as a whole has been described as slender-bodied and "smelt-like", similar to sister genus ''Piabucus'';"THE FISH FAMILIES". Field Guide to the Fishes of the Amazon, Orinoco, and Guianas, edited by Peter van der Sleen and ... [...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 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 Caudomaculatus
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] |
Bryconops Affinis
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 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] |
Characiformes
Characiformes is an order of ray-finned fish, comprising the characins and their allies. Grouped in 18 recognized families, more than 2000 different species are described, including the well-known piranha and tetras.; Buckup P.A.: "Relationships of the Characidiinae and phylogeny of characiform fishes (Teleostei: Ostariophysi)", ''Phylogeny and Classification of Neotropical Fishes'', L.R. Malabarba, R.E. Reis, R.P. Vari, Z.M. Lucena, eds. (Porto Alegre: Edipucr) 1998:123-144. Taxonomy The Characiformes form part of a series called the Otophysi within the superorder Ostariophysi. The Otophysi contain three other orders, Cypriniformes, Siluriformes, and Gymnotiformes. The Characiformes form a group known as the Characiphysi with the Siluriformes and Gymnotiformes. The order Characiformes is the sister group to the orders Siluriformes and Gymnotiformes, though this has been debated in light of recent molecular evidence. Originally, the characins were all grouped within a single ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
