Characiformes genera

genus of fishes

Hyphessobrycon is a genus of freshwater ray-finned fish belonging to the family Acestrorhamphidae, the American characins. 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 these species are native to South America; about six species are from Central America, and a single species, H. compressus, is from southern Mexico.

Hemigrammus is a genus of freshwater ray-finned fishes belonging to the family Acestrorhamphidae, the American characins. The fishes in this genus are found in South America, including Trinidad, and commonly seen in the aquarium trade. These are medium-small tetras where the largest species reach up to around .

Hydrocynus is a genus of Characin fish in the family Alestidae commonly called "tigerfish," native to Africa. The genus name is derived from Ancient Greek ὕδωρ ("water") + κύων ("dog"). The genus contains five species, all commonly known as "African tigerfish" for their fierce predatory behaviour and other characteristics that make them excellent game fish. Hydrocynus are normally piscivorous, but H. vittatus is proven to prey on birds in flight.

Moenkhausia is a genus of freshwater ray-finned fishes belonging to the family Acestrorhamphidae, the American characins. They are found in tropical and subtropical South America and are medium-sized tetras, where the largest species only reach around .

Characidium is a genus of freshwater ray-finned fish belonging to the family Crenuchidae, the South American darters. The fishes in this genus are mainly found in South America, but C. marshi is from Panama. They are small (less than long), slender fish that live on the bottom in flowing fresh waters and feed on small animals such as insects.

Tetragonopterus is a genus of freshwater ray-finned fishes belonging to the family Characidae. This fishes in this genus are found in South America.

Nematobrycon is a genus of freshwater ray-finned fishes belonging to the family Acestrorhamphidae, the American characins. The fishes in this genus are endemic to the Atrato and San Juan River basins in western Colombia.

Utiaritichthys is a genus of serrasalmid fish found in the Amazon and Orinoco basins in tropical South America. The adults are typically found in rapidly flowing water where they feed on aquatic plants in the family Podostemaceae and filamentous algae. They reach up to in standard length.

Bryconops is a genus of freshwater ray-finned 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.

Triportheus is a genus of freshwater ray-finned fishes belonging to the family Triportheidae, the hatchet characins or keeled characins. The fishes in this genus are found in South America, including Trinidad, ranging from the Rio de la Plata basin to the basins of the Orinoco and Magdalena. Some are migratory. This genus is classified in the subfamily Triportheinae.

Melanocharacidium is a genus of freshwater ray-finned fishes belonging to the family Crenuchidae, the South American darters. They are found in the Amazon, Orinoco and Araguaia basins, as well as river basins of the Guianas. They are small fish, up to around in standard length.

Astyanacinus is a monospecific genus of freshwater ray-finned fish belonging to the family Acestrorhamphidae, the American characins. The only species in the genus is Astyanacinus moorii which is found in the Upper Paraguay River basin in Bolivia and Brazil. The specific name honours the English botanist Spencer Moore who collected the holotype.

Poecilocharax is a genus of South American darters in the family Crenuchidae from the Amazon, Orinoco and Potaro basins. There are currently four described species in this genus. It is one of two genera within the subfamily Crenuchinae.

Hepsetus is a genus of freshwater ray-finned fishes belonging to the monotypic family Hepsetidae, the African pikes or African pike characins, in the order Characiformes. It was long believed that only a single widespread species existed, H. odoe, but studies in 2011–2013 have shown that this species is restricted to parts of West and Central Africa. The well-known species of southern Africa, including Kafue River, is Hepsetus cuvieri. These predatory fish reach up to in length.

Microcharacidium is a genus of freshwater ray-finned fishes belonging to the family Crenuchidae, the South American darters. The fishes in this genus are found in South America.

Citharinus is a genus of freshwater ray-finned fishes belonging to the family Citharinidae, the lutefishes. The fishes in this genus are found in tropical Africa.

Knodus is a genus of freshwater ray-finned fishes, characins, belonging to the family Stevardiidae. The fishes in this genus are found in South America.

Rachoviscus is a genus of freshwater ray-finned fishes belonging to the family Acestrorhamphidae, the American characins. These threatened fish are endemic to coastal river basins in Bahia, Paraná and Santa Catarina in eastern Brazil.

Agoniates is genus of freshwater ray-finned fishes belonging to the family Triportheidae, the hatchet characins or keeled characins. The fishes in this genus are found in tropical South America. It is the only genus in the subfamily Agoniatinae.

Elachocharax is a genus of small freshwater ray-finned fish belonging to the family Crenuchidae, the South American darters. They are native to the Amazon and Orinoco basins in South America.

thumb|Hemiodus gracilis Hemiodus is a genus of halftooths from South America with the greatest species richness in the Amazon Basin, but also found in the Orinoco, Essequibo, Paraná–Paraguay and Parnaíba River basins. Depending on the species involved, these elongate fish reach a length of .

Leptagoniates is a monospecific genus of ray-finned fish belonging to the family Characidae. It contains the single species Leptagoniates steindachneri, which is found in the Amazon River basin in Ecuador and Peru.

Abramites is a genus of freshwater ray-finned fishes belonging to the family Anostomidae, the toothed headstanders. These fishes are found in South America.

Ammocryptocharax is a genus of freshwater ray-finned fishes belonging to the family Crenuchidae, the South American darters. These fishes are found in South America.

Semaprochilodus is a genus of South American freshwater ray-finned fish in the family Prochilodontidae, the bocachicos or flannel-mouthed characiformes. They have sometimes been included in the genus Prochilodus instead. Of the six species, three are from the Amazon Basin, two from the Orinoco Basin and a single from the Maroni Basin. Depending on the exact species, they reach a maximum length of .

species of fish

thumb | right | alt=Saccodon dariensis | Saccodon dariensis Saccodon is a genus of freshwater ray-finned fishes belonging to the family Parodontidae, the scrapetooths. The fishes in this genus are found in the Tumbes-Chocó-Magdalena region from Panama to northwestern Peru.

Prochilodus is a genus of freshwater ray-finned fishes belonging to the family Prochilodontidae, the bocachicos or flannel-mouthed characiformes. This family includes two other genera, Ichthyoelephas and Semaprochilodus, which have been included in Prochilodus instead.

Apareiodon is a genus of freshwater ray-finned fishes belonging to the family Parodontidae, the scrapetooths. The fishes in this genus are found in the Neotropics, where they occur as far south as Río de la Plata.

Holoshesthes is a monospecific genus of freshwater ray-finned fish belonging to the family Characidae. The only species in this genus is Holoshesthes pequira, a characin, found in South America.

Amblystilbe is a monospecific genus of freshwater ray-finned fish belonging to the family Characidae. The only species in the genus is Amblystilbe howesi, a characin, which is found in the western Amazon basin in Bolivia, Brazil and Peru. This fish has a maximum standard length of .

species of fish

Bivibranchia s a genus of freshwater ray-finned fishes belonging to the family Hemiodontidae, the halftooths. The fishes in this genus are found in tropical South America.

Petulanos is a genus of freshwater ray-finned fishes belonging to the family Anostomidae, the toothed headstanders. from South America.

Nematocharax is a genus of freshwater ray-finned fishes belonging to the family Acestrorhamphidae, the American characins. The species are endemic to Brazil. The generic name alludes to (nḗmatos), "threaded", referring to the long, thread-like fins; and Charax, a common name for genera in the order Characiformes, from (chárax), meaning a pointed stake in a palisade, referring to their dentition.

Anodus is a genus of freshwater ray-finned fishes belonging to the family Hemiodontidae, the halftooths. The fishes in this genus are found in tropical South America.

Rhinopetitia is a genus of freshwater ray-finned fish, characins, belonging to the family Stevardiidae. The fishes in this genus are endemic to Brazil.

Petitella is a genus of freshwater ray-finned fishes belonging to the family Acestrorhamphidae, the American characins, of the order Characiformes. The fishes in this genus are found in South America.

genus of fishes

Argonectes is a genus of freshwater ray-finned fishes belonging to the family Hemiodontidae, the halftooths. The fishes in this genus are found in tropical South America.

Prosomyleus is a monospecific genus of freshwater ray-finned fish belonging to the family Serrasalmidae, the pacus, piranhas and related species. The only species in this genus is Prosomyleus rhomboidalis, which is a medium to large omnivorous fish from South America, where it is found in the Amazon River basin, as well as the north and the eastern Guiana Shield rivers. It can grow to a length of .

Odontocharacidium is a genus of freshwater ray-finned fishes belonging to the family Crenuchidae, the South American darters. The fishes in this genus are small fishes, with a maximum total length of , found in South America.

Ctenocheirodon is a monospecific genus of freshwater ray-finned fish belonging to the family Characidae. The only species in this genus is Ctenocheirodon pristis, a characin, which is endemic to the drainage basin of the upper Tocantins River in Brazil. This species has a fusiform body with a maximum standard length of in females and in males. It occurs in clear water over sand and gravel substrates with no vegetation. The genus name prefixes Cheirodon with cteno, which means "comb", and the specific name pritis, means "saw", both names being a reference to the "ventral procurrent caudal-fin a

Lignobrycon is a genus of freshwater ray-finned fishes belonging to the family Triportheidae, the hatchet characins. This genus contains one known extant species, L. myersi, and one, or more, extinct species. The fishes in this genus are found in South America.

Coptobrycon is a monospecific genus of freshwater ray-finned fish belonging to the family Acestrorhamphidae, the American tetras. The only species in this genus is Coptobrycon bilineatus, a species which is endemic to Brazil, where it is known to occur in the upper Tietê River basin and in coastal basins that drain the Serra do Mar near the municipalities of Mogi das Cruzes and Bertioga in São Paulo state. It is found in clear water with abundant aquatic vegetation and submerged tree trunks, where it lives in shoals. Its diet is mainly plant matter, with some animals eaten as well. It appears

Psalidodon is a genus of freshwater ray-finned fishes belonging to the family Ancestrorhamphidae, the American characins. Some of these fish, like many of their relatives, are kept as aquarium pets and known collectively as tetras.