Baryancistrus is a genus of freshwater Loricariid catfish. They inhabit flowing sections of rivers, especially clearwater, in the basins of the Amazon and Orinoco in Brazil and Venezuela. The largest species reach up to 34 cm (13 in) in total length.
Hypancistrus is a genus of loricariid catfish originating from the Amazon basin in South America. Unlike many of the other Loricariids, however, some Hypancistrus species are more carnivorous and enjoy meat in their diet. Hypancistrus species are popular aquarium fish, including such popular fish as the zebra pleco and Queen Arabesque pleco.
Peckoltia is a genus of small South American armored suckermouth catfishes. Many of these fish are popular aquarium fish.
Hemiancistrus is a genus of suckermouth armored catfishes. These species are native to South America. The taxonomy of this genus is complex and unclear, and major work has to be done. Many of these fish are popular aquarium fish.
Peckoltia sabaji is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the basins of the Rupununi, the Essequibo River, and the Takutu River in Guyana, as well as the basins of the Casiquiare canal, the Rio Negro, the Cinaruco River, and the Orinoco in Venezuela. It is usually found among boulders in medium to large rivers. The species reaches 19.8 cm SL and is of disputed classification.
Ancistrus amaris is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Orinoco River and Apure River basins in Venezuela. The species reaches at least 11.57 cm SL and was described in 2019 by Lesley S. de Souza of the Field Museum of Natural History, Donald C. Taphorn of the Royal Ontario Museum, and Jonathan Armbruster of Auburn University alongside five other species of Ancistrus. FishBase does not list this species.
Ancistrus saudades is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the basins of the Takutu River, the Ventuari River, the Caroní River, and the Caura River in Guyana, Venezuela, and Brazil. The species reaches at least 10.75 cm SL and was described in 2019 by Lesley S. de Souza of the Field Museum of Natural History, Donald C. Taphorn of the Royal Ontario Museum, and Jonathan Armbruster of Auburn University alongside five other species of Ancistrus. FishBase does not list this species.
Ancistrus yutajae is a species of catfish in the family Loricariidae. It is native to South America, where it occurs only in the Yutajé River in Venezuela. The species reaches at least 8.28 cm SL and was described in 2019 by Lesley S. de Souza of the Field Museum of Natural History, Donald C. Taphorn of the Royal Ontario Museum, and Jonathan Armbruster of Auburn University alongside five other species of Ancistrus. FishBase does not list this species.
Chaetostoma platyrhynchus is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Caquetá River basin in Colombia. The species reaches 9.5 cm in total length. The species is known to be of disputed classification and spelling.
Hemiancistrus guahiborum is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Orinoco drainage in Venezuela. The species reaches at least 12.55 cm SL and was described in 2005 by David C. Werneke and Jonathan W. Armbruster of Auburn University, Nathan K. Lujan of the American Museum of Natural History, and Donald C. Taphorn of the Royal Ontario Museum on the basis of its distinctive coloration and morphology. It appears in the aquarium trade, where it is usually known either as the orange-seam pleco or by its L-number, which is L-106.
Peckoltia caenosa is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in streams in the llanos of Venezuela that are part of the Orinoco drainage basin. The streams that it inhabits are typically slow-flowing and muddy, and the species is often seen hiding inside submerged hollow logs during the day. The species reaches 15.7 cm SL. Its specific epithet is derived from a Latin word meaning "muddy" or "dirty", referring both to the species' mottled coloration and the muddy habitats in which it is found.
Peckoltia cavatica is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Rupununi basin in Guyana. It is found in areas with large amounts of lateritic rock, and it is usually seen in holes and caves within the rock, which are also where it is thought to breed. P. cavatica's preference for such environments was notable enough to the authors of its 2005 description, Jonathan W. Armbruster and David C. Werneke, that the specific epithet bestowed upon it means "living in caves" in Latin. The species reaches 7.2 cm SL.
Peckoltia ephippiata is a species of catfish in the family Loricariidae. It is a freshwater fish native to South America, where it is known from the Leitão River, which is part of the Madeira River drainage in the state of Rôndonia in Brazil. The species reaches 10.2 cm SL.
Peckoltia lineola is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the basins of the Ventuari River in Venezuela and the Inírida River in Colombia. The species reaches 9.7 cm SL and is typically found in rocky riffles. Its specific epithet, lineola, derives from a Latin word meaning "line", referring to the lines present on the species' compound pterotic.
Peckoltia lujani is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Orinoco and Meta River basins in Venezuela and Colombia. The species reaches 7.5 cm SL.
Pseudancistrus orinoco is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Orinoco basin. The species reaches 10 cm in total length.
Pseudancistrus yekuana is a species of catfish in the family Loricariidae.
Pseudancistrus pectegenitor is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the main channel of the Orinoco near the mouth of the Ventuari River, as well as in the Casiquiare. The species is usually found in areas with flowing water near large rocky outcrops. It reaches 24.2 cm SL.
Ancistomus feldbergae is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Xingu River basin in Brazil.
Ancistomus snethlageae is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Tapajós basin in Brazil. The species reaches 22 cm in total length. Although originally described as a species of Ancistrus in 1911 by Franz Steindachner and subsequently reclassified in the genera Hemiancistrus, Lasiancistrus, and Peckoltia, a 2015 review conducted by Jonathan W. Armbruster, David C. Werneke, and Milton Tan listed the species as valid within Ancistomus.
