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.
Isaäc Jan Hendrik Isbrücker is a retired Dutch ichthyologist who specialised in the scientific classification of South American catfish (Loricarioidea).
Microplecostomus forestii, is a species of fish in the family Loricariidae found in two tributaries of the Tocantizinho River in the Tocantins basin. It is typically found in shallow, clear waters at depths of around 50 cm, in flat rocky environments. It is known to occur alongside the species Rhinolekos capetinga, as well as members of the genera Ancistrus, Creagrutus, Hypostomus, Ituglanis, and Phenacorhamdia. This species is the only member of its genus. It reaches 3.8 cm in standard length.
Antenor Leitão de Carvalho is a Brazilian herpetologist and ichthyologist, born on 15 April 1910 and died on 11 December 1985 in Rio de Janeiro.
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.
Aphanotorulus gomesi is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Jaguaribe River basin. The species reaches 14.3 cm SL. It is thought to be a facultative air-breather.
Hypostomus johnii is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the basins of the Parnaíba River and the São Francisco River. The species reaches 11.3 cm SL and is believed to be a facultative air-breather.
Hypostomus borellii is a species of catfish in the family Loricariidae. It is native to the upper and middle Pilcomayo River basin in Argentina, Uruguay, and Bolivia. The species reaches 16.1 cm (6.3 in) standard length and is believed to be a facultative air-breather.
Hypostomus derbyi is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the basins of the Iguazu River and the Urugua-í River, which are both tributaries of the Paraná River. The species reaches 31 cm in standard length and is believed to be a facultative air-breather.
Hypostomus dlouhyi is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Yguazú River basin in the middle Paraná River drainage. The species reaches 24.5 cm SL and is believed to be a facultative air-breather.
Hypostomus fonchii is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Cushabatay River basin, which is itself part of the Ucayali River drainage in Peru, as well as the Mamoré River basin in Bolivia. It is typically found in clear, high-altitude waters with large rocks, dead leaves and wood, an absence of aquatic vegetation, and a substrate of sand, clay, or pebbles. The species reaches 15.4 cm SL.
Hypostomus garmani is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the São Francisco River basin. The species reaches 13 cm SL and is believed to be a facultative air-breather.
Hypostomus hermanni, sometimes known as Hermann's pleco, is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Tietê River basin, including the Piracicaba River, in Brazil. It is typically found in areas with flowing water of shallow to moderately shallow depth. The species reaches 24 cm (9.4 in) in total length and is believed to be a facultative air-breather.
Hypostomus boulengeri is a species of catfish in the family Loricariidae. It is native to South America. The species reaches 24.5 cm SL and is believed to be a facultative air-breather.
Hypostomus carvalhoi is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Jaguaribe River basin. The species reaches 14.2 cm SL and is believed to be a facultative air-breather.
Hypostomus commersoni is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Paraná River drainage, including the Iguazu River, the Paraguay River, the Río de la Plata, and the Dulce River. It is typically found in rivers with muddy substrates and moderate currents. The water that H. commersoni inhabits usually has a temperature of 16.8 to 27.8 °C, a pH of 7.2 to 9.2, a turbidity of 23.7 to 442 NTU, an oxygen concentration of 6.1 to 9.1 mg/L, and a conductivity of 1.087 to 2.654 μS/cm.
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 heraldoi is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Corumbá River and Rio Grande basins in the upper Paraná River drainage in Brazil. It is typically found in turbid waters with a substrate composed of rocks with some amount of sand. It is known to be syntopic with other loricariid species in the genus Hypostomus, including Hypostomus ancistroides, H. denticulatus, H. iheringii, H. margaritifer, and H. regani. The species reaches 23.6 cm in standard length and is believed to be a facultative air-breather.
Hypostomus iheringii is a species of catfish in the family Loricariidae. It is native to South America, where it is occurs in the Paraná River drainage basin, being known from the Tietê River basin as well as the Corumbá River, where it is syntopic with Hypostomus ancistroides, H. denticulatus, H. heraldoi, H. margaritifer, and H. regani. The species reaches 11.6 cm in standard length and is believed to be a facultative air-breather.
Hypostomus isbrueckeri is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the middle and upper Uruguay River basin. The species reaches 30.8 cm in total length, can weigh up to at least 285 g, and is believed to be a facultative air-breather.
