''Curculionichthys insperatus'' is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

catfish Catfish (or catfishes; order Siluriformes or Nematognathi) are a diverse group of ray-finned fish. Named for their prominent barbels, which resemble a cat's whiskers, catfish range in size and behavior from the three largest species alive, ...

in the family

Loricariidae The Loricariidae is the largest family of catfish (order Siluriformes), with 92 genera and just over 680 species. Loricariids originate from freshwater habitats of Costa Rica, Panama, and tropical and subtropical South America. These fish are not ...

. It is native to the

Paraná River The Paraná River ( es, Río Paraná, links=no , pt, Rio Paraná, gn, Ysyry Parana) is a river in south-central South America, running through Brazil, Paraguay, and Argentina for some ."Parana River". Encyclopædia Britannica. Encyclopædia Br ...

drainage in

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

, where it inhabits streams near banks covered with partially submerged vegetation. It reaches 3 cm (1.2 inches)

standard length Fish measurement is the measuring of individual fish and various parts of their anatomies. These data are used in many areas of ichthyology, including taxonomy and fisheries biology. Overall length * Standard length (SL) is the length of a fish m ...

. This species was formerly classified as a member of the genus ''

Hisonotus ''Hisonotus'' is a genus of armored catfishes native to South America. Species of ''Hisonotus'' and ''Curculionichthys'' are the only representatives of the subfamily Otothyrinae having serrae on the posterior edge of the pectoral fin spine. T ...

'', although it was moved to the then-new genus ''

Curculionichthys ''Curculionichthys'' is a genus of fish in the family Loricariidae native to South America. Species There are currently 9 recognized species in this genus: * '' Curculionichthys coxipone'' Roxo, G. S. C. Silva, L. E. Ochoa & C. de Oliveira, ...

'' in 2015.

References

Loricariidae Catfish of South America Freshwater fish of Brazil Endemic fauna of Brazil Fish described in 2003 {{Loricariidae-stub