Niobichthys ferrarisi is the only species of the monotypic genus Niobichthys of loricariid catfish. N. ferrarisi is classified in the tribe Hypoptopomatini within the subfamily Hypoptopomatinae. This fish reaches a length of 7.0 centimetres (2.8 in) SL. This species is endemic to Venezuela and occurs in the upper Baria River and the Rio Negro basin.
Harttia is a genus of armored catfishes native to South America.
Neoplecostomus is a genus of fish in the family Loricariidae native to South America. Neoplecostomus can be distinguished from all other loricariids by a modified shield of small plates on the abdomen with posteriorly directed odontodes; the shield appears to act as a holdfast. The color pattern is generally mottled brown with the abdomen white. The head is long, rounded, and shovel-shaped. The fin spines are weak. They range from about 8 to 11 cm (3.1–4.3 in) SL. The species of Neoplecostomus live in fast-flowing water.
Corumbataia britskii is a species of armored catfish endemic to Brazil. It is found in small tributaries of the Sucuriú River, upper Paraná River Basin in the state of Mato Grosso do Sul. This species was found in deforested areas in moderate to fast current streams. It is associated with aquatic macrophytes or the submerged portion of marginal vegetation. In its gut contents were found filamentous blue-green algae, chlorophytes, diatoms and bark. This species grows to a length of 2.7 centimetres (1.1 in) SL.
Apistoloricaria condei is a species of armored catfish endemic to Ecuador where it is found in the Napo River basin. This species can be found in turbid and dark waters, in moderately fast flowing streams, between 2–10 metres (6.6–32.8 ft) deep; no submerged vegetation is found here, and the bottom is made of sand, mud, dead leaves, twigs, branches, and trunks. This species grows to a length of 14.1 centimetres (5.6 in) SL.
Kronichthys heylandi is a species of armored catfish endemic to Brazil where it occurs in coastal streams between Santos and Rio de Janeiro. This species grows to a length of 15 centimetres (5.9 in) TL.
Otocinclus arnoldi is a species of armoured catfish native to South America, where it occurs in the lower río Paraná drainage, in the lower and middle rio Uruguai and in the río de La Plata. This species reaches a maximum length of 4.8 centimetres (1.9 in) (SL).
Otocinclus batmani is a species of armored catfish (Loricariidae) native to South America. It can grow up to 37 millimetres (1.5 in) (SL).
Nannoplecostomus eleonorae is a species of armored catfish known only from the upper Rio Tocantins basin in the Brazilian state of Goiás. This species grows to a length of 2.22 centimetres (0.87 in) SL. This species is the only known member of its genus and the smallest loricariid catfish known.
Corumbataia liliai is a species of armored catfish endemic to Brazil, where it is found in the Upper Rio Paraná basin, Goiás, Brazil. This species grows to a length of 3 centimetres (1.2 in) SL.
Corumbataia lucianoi is a species of armored catfish endemic to Brazil, where it is found in the Upper Rio Paraná basin, Goiás, Brazil. This species grows to a length of 3 centimetres (1.2 in) SL.
Otothyropsis polyodon is a species of armored catfish found in the tributaries of the Rio Verde which is a tributary to the upper Rio Paraná basin in Mato Grosso do Sul, Brazil. This species reaches a length of 3.7 cm (1.5 in).
Scott Allen Schaefer is an American ichthyologist working at the American Museum of Natural History as the dean of science for collections, exhibitions, and the public understanding of science; he serves as the curator-in-charge, in the department of ichthyology, within the division of vertebrate zoology.
Hypoptopoma machadoi is a species of catfish of the family Loricariidae.
Harttia absaberi is a species of armored catfish where it is found in the upper rio Paraná drainage in Brazil.
Parotocinclus haroldoi is a species of catfish in the family Loricariidae. It is native to South America, where it is known from the state of Piauí in Brazil, with a 2020 redescription defining its range as the Parnaíba River basin. The species reaches 3.5 cm SL.
Hypostomus ericae is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the upper Tocantins River drainage in Brazil. The species reaches 24 cm in total length. Its specific epithet, ericae, honors Erica Pellegrini Caramaschi, who collected the first specimens of the species. The fish was formally described as a species new to science in 2005 by Pedro Hollanda Carvalho and Claude Weber in 2005. Characteristics that distinguish it from other catfish in genus Hypostomus include the number of odontodes in the opercle; its colour pattern, which features widely spaced spots on its body; the presence of a buccal papilla; and the depth of its caudal peduncle.
Hypostomus weberi is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the middle Rio Negro in Brazil. One record of the species' occurrence refers to a "río Cicipa", which is thought to possibly correspond with the Siapa River, a tributary of the Casiquiare in Venezuela. The species is typically found in rapids or flooded forest environments. It reaches 17.5 cm SL and is known to feed on detritus. Its specific epithet, weberi, honors Claude Weber of the Natural History Museum of Geneva, for his contributions to knowledge of the genus Hypostomus.
Hypostomus delimai is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the basins of the Araguaia River and the Tocantins River in Brazil. It is typically found in areas with turbid water, riparian vegetation, and a substrate composed of rocks and sand. It is known to be sympatric with other species of Hypostomus, including H. faveolus and H. pyrineusi, as well as species of Aphanotorulus. The species reaches 25.3 cm in standard length and is believed to be a facultative air-breather.
Hypostomus renestoi is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the upper Paraguay River basin in Brazil. The species was described in 2018 by Cláudio Henrique Zawadzki, Hugmar Pains da Silva, and Waldo Pinheiro Troy alongside the redescription of Hypostomus latirostris. FishBase does not list this species.
