''Hollandichthys'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

characin Characiformes is an order of ray-finned fish, comprising the characins and their allies. Grouped in 18 recognized families, more than 2000 different species are described, including the well-known piranha and tetras.; Buckup P.A.: "Relationshi ...

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

to rivers and streams in

southern Southern may refer to: Businesses * China Southern Airlines, airline based in Guangzhou, China * Southern Airways, defunct US airline * Southern Air, air cargo transportation company based in Norwalk, Connecticut, US * Southern Airways Express, M ...

and

southeastern Brazil The Southeast Region of Brazil ( pt, Região Sudeste do Brasil; ) is composed of the states of Espírito Santo, Minas Gerais, Rio de Janeiro (state), Rio de Janeiro and São Paulo State, São Paulo. It is the richest region of the country, responsi ...

from

Rio Grande do Sul Rio Grande do Sul (, , ; "Great River of the South") is a Federative units of Brazil, state in the South Region, Brazil, southern region of Brazil. It is the Federative_units_of_Brazil#List, fifth-most-populous state and the List of Brazilian st ...

Rio de Janeiro Rio de Janeiro ( , , ; literally 'River of January'), or simply Rio, is the capital of the state of the same name, Brazil's third-most populous state, and the second-most populous city in Brazil, after São Paulo. Listed by the GaWC as a b ...

. These are small fish that reach up to in

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 ...

. The currently recognized species in this genus are: * '' Hollandichthys multifasciatus'' ( C. H. Eigenmann & A. A. Norris, 1900) * ''

Hollandichthys taramandahy ''Hollandichthys'' is a genus of characins endemism, endemic to rivers and streams in South Region, Brazil, southern and southeastern Brazil from Rio Grande do Sul to Rio de Janeiro (state), Rio de Janeiro. These are small fish that reach up to ...

'' Bertaco & L. R. Malabarba, 2013A new species of the characid genus ''Hollandichthys'' Eigenmann from coastal rivers of southern Brazil (Teleostei: Characiformes) with a discussion on the diagnosis of the genus.
''Neotropical Ichthyology, 11 (4): 767-778.'' Genus named for zoologist-paleontologist William J. Holland (1848-1932), Director of the

Carnegie Museums of Pittsburgh Carnegie Museums of Pittsburgh are four museums that are operated by the Carnegie Institute headquartered in the Carnegie Institute complex in the Oakland neighborhood of Pittsburgh, Pennsylvania. The Carnegie Institute complex, which includes t ...

References

Gymnocharacini Taxa named by Carl H. Eigenmann {{Characidae-stub