| Ancistrus occidentalis | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Siluriformes |
| Family: | Loricariidae |
| Genus: | Ancistrus |
| Species: | A. occidentalis |
| Binomial name | |
| Ancistrus occidentalis (Regan, 1904) | |
| Synonyms | |
| |
Ancistrus occidentalis [1] is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Bobonaza River basin in Ecuador. The species reaches 8.6 cm (3.4 inches) SL. [2]
Ancistrus caucanus is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Cauca River basin in Colombia, for which it is named. The species reaches 5.2 cm SL. It is not to be confused with the similarly named species Lasiancistrus caucanus.
Ancistrus galani is a species of catfish in the family Loricariidae. It is native to South America, where it occurs only in Los Laureles Cave, at an elevation of 650 m above sea level, in the Socuy River basin, which is part of the Lake Maracaibo drainage system in the state of Zulia in Venezuela. The species reaches 5.6 cm SL and was named after Carlos Galan, a Venezuelan speleologist. A. galani differs from most Ancistrus species in having an unpigmented body, atrophied or entirely absent eyes, and highly reduced ocular orbits, which are all thought to be adaptations to its dark subterranean habitat and stygobitic lifestyle.
Ancistrus bolivianus is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the basins of the Beni River, the Mamoré River, and the Madre de Dios River. The species reaches 8.8 cm SL.
Ancistrus aguaboensis is a species of catfish in the family Loricariidae. It is native to South America, where it is known from the upper Tocantins River basin. The area in which the species occurs is characterized by riffles and a primarily rocky substrate, although some amounts of gravel and sand are present. The species reaches 6.7 cm SL. It sometimes appears in the aquarium trade, where it is usually either known as the Aguaboa ancistrus, the Aguaboa pleco, or by its L-number, L032.
Ancistrus jelskii is a species of catfish in the family Loricariidae. It is native to the upper Tulumayo River basin, which is part of the Ucayali River system in Peru. The species reaches 8 cm in total length.
Ancistrus triradiatus is a species of catfish in the family Loricariidae. It is native to South America, where it is known from the drainage basins of the Orinoco, the Los Guayos River, Lake Valencia, and Lake Maracaibo. The species reaches 9.2 cm SL. It sometimes appears in the aquarium trade, where it is known as the gold-spot or three-ray bristlenose pleco.
Ancistrus minutus is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in tributaries of the Tocantins River upstream of the Serra da Mesa Dam in Goiás, Brazil. The species reaches 5.7 cm SL. It is named for its notably small size when compared with many of its congeners.
Ancistrus formoso is a species of catfish in the family Loricariidae. It is native to South America, where it occurs only in the cave of Buraco do Ducho in the Formoso phreatic system in Brazil. It is a stygobitic species that is known to lack eyes and body pigmentation, which indicate a high level of specialization to living in a subterranean, lightless environment. It is one of three known stygobitic members of Ancistrus, alongside A. cryptophthalmus and A. galani. The species reaches 7.9 cm SL.
Ancistrus latifrons is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the basins of the Amazon River and the Solimões River. The species reaches 15.4 cm SL.
Ancistrus fulvus is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Acará River basin in the lower Amazon River drainage in Brazil. The species reaches 8.8 cm SL.
Ancistrus lithurgicus is a species of catfish in the family Loricariidae. It is a freshwater species native to South America, where it occurs in the basin of the Essequibo River in Guyana. The species reaches 13.2 cm SL.
Ancistrus clementinae is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Pozuelos River basin, which is part of the Guayas River drainage in Ecuador. The species reaches 10.2 cm SL.
Ancistrus multispinis is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Atlantic coastal drainage of eastern Brazil, ranging from the Macacu River to the Maquiné River. The species reaches 14.2 cm SL.
Ancistrus tamboensis is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Tambo River basin in the Ucayali River drainage of Peru. The species reaches 8.2 cm SL and is named for the river basin in which it occurs.
Ancistrus erinaceus is a species of catfish in the family Loricariidae. It is native to South America, where it is reportedly known from Chile. The species reaches 7.5 cm SL.
Ancistrus nudiceps is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Takutu River basin in the upper Branco River drainage in Guyana. The species reaches 7.9 cm SL.
Ancistrus variolus is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Ampiyacu River basin in Peru. The species reaches 4.8 cm SL.
Ancistrus montanus is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in high-altitude freshwater environments in the Beni River basin in the upper Madeira River drainage in Bolivia. The species reaches 9.2 cm SL.
Ancistrus martini is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Zulia River basin, which is part of the Catatumbo River drainage, which itself is part of the Lake Maracaibo drainage system in Venezuela. The species reaches 8.9 cm SL.
Ancistrus bufonius is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Apurímac River basin in Peru. The species reaches 11.5 cm SL.
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