''Gnathodolus bidens'' is a species of

headstander A headstander is any of several species of South American fish, including ''Anostomus ternetzi'', ''Anostomus anostomus'' (family Anostomidae) and members of genus ''Chilodus'' from the family Chilodontidae. The name derives from their habit of ...

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 the

Orinoco The Orinoco () is one of the longest rivers in South America at . Its drainage basin, sometimes known as the Orinoquia, covers , with 76.3 percent of it in Venezuela and the remainder in Colombia. It is the fourth largest river in the wor ...

and

Casiquiare The Casiquiare river () is a distributary of the upper Orinoco flowing southward into the Rio Negro, in Venezuela, South America. As such, it forms a unique natural canal between the Orinoco and Amazon river systems. It is the world's largest ...

rivers in

Venezuela Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República Bolivariana de Venezuela), is a country on the northern coast of South America, consisting of a continental landmass and many islands and islets in th ...

. It is the only member of its genus.

Environment

''Gnathodolus bidens'' is known to be found in a freshwater environment within a benthopelagic depth range. This species is native to a tropical climate.

Distribution

''Gnathodolus bidens'' can be found in South America, Orinoco, Casiquiare rivers, and Venezuela.

Biology

''Gnathodolus bidens'' has the ability to breed once the pair is in a heavily dense and weeded area. This species serves as no threat to humans and they are considered to be harmless.

Classification

The taxonomic classification of ''Gnathodolus bidens'' is as follows: *Kingdom : Animalia *Phylum : Chordata *Subphylum : Vertebrata *Superclass : Osteichthyes *Class : Actinopterygii *Subclass : Neopterygii *Infraclass : Teleostei *Superorder : Ostariophysi *Order : Characiformes *Family : Anostomidae *Subfamily : Anostominae *Genus : ''Gnathodolus '' *Species : ''Gnathodolus bidens''

References

Notes

* Anostomidae Monotypic fish genera Freshwater fish of Venezuela Endemic fauna of Venezuela Fish described in 1927 {{Characiformes-stub