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 where 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 associates 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.
Harttia fowleri is a species of armored catfish that inhabits the Oyapock River basin of Brazil and French Guiana. C. fowleri is a poorly known species that was caught in rapids along with Metaloricaria paucidens. This species grows to a length of 22.2 centimetres (8.7 in) SL.
Harttia carvalhoi is a species of armored catfish endemic to Brazil where it is found in the Paraíba do Sul drainage basin. This species grows to a length of 7.1 centimetres (2.8 in) SL.
Harttia kronei is a species of armored catfish of the family endemic to Brazil where it is found in the Ribeira de Iguape River basin. This species grows to a length of 12 centimetres (4.7 in) SL.
Sturisomatichthys leightoni is a species of armored catfish of the family Loricariidae endemic to Colombia, where it occurs in the upper Magdalena and Cauca River basins. This species grows to a length of 18 centimetres (7.1 in) SL.
Isbrueckerichthys alipionis is a species of armored catfish endemic to Brazil where it occurs in the Ribeira de Iguape River basin. This species grows to a length of 8.15 centimetres (3.21 in) SL.
Isbrueckerichthys duseni is a species of armored catfish endemic to Brazil where it occurs in the Ribeira de Iguape River basin. This species grows to a length of 9.88 centimetres (3.89 in) SL.
Lampiella gibbosa is a species of armored catfish endemic to Brazil where it is found in the Ribeira de Iguape River basin. This species is the only recognized member of its genus. This species grows to a length of 5.0 centimetres (2.0 in) TL.
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.
Panaque schaeferi is a freshwater species of fish from the South American armoured catfish family Loricariidae. Panaque schaeferi is widely distributed throughout the upper Amazon in Peruvian and Ecuadorian rivers, and it has been observed as far down as Santarém, Brazil. Growing to at least 60 cm SL, it is one of the largest, and likely one of the heaviest species of Loricariid. It has been known in the aquarium trade since at least 1996 under various names such as 'Titanic pleco' and 'Volkswagen pleco', in addition to L203 and LDA065 under the L-number code. Juveniles are often confused with Panaque bathyphilus and erroneously called L090c.
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).
Hypoptopoma baileyi is a species of catfish of the family Loricariidae.
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.
