''Rhabdolichops'' is a genus of

glass knifefish Glass knifefishes are fishes in the family Sternopygidae in the order Gymnotiformes. Species are also known as rattail knifefishes. These fishes inhabit freshwater streams and rivers in Panama and South America. Many sternopygid species are sp ...

es found in

Amazon Amazon most often refers to: * Amazons, a tribe of female warriors in Greek mythology * Amazon rainforest, a rainforest covering most of the Amazon basin * Amazon River, in South America * Amazon (company), an American multinational technolog ...

, Orinoco and Maroni basins in

tropical The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in the Southern Hemisphere at S. The tropics are also referred to ...

South America. They live near the bottom in main river channels, floodplains (including flooded forest like

igapó Igapó (, from Old Tupi: "root forest") is a word used in Brazil for blackwater-flooded forests in the Amazon biome. These forests and similar swamp forests are seasonally inundated with freshwater. They typically occur along the lower reaches of ...

) and lagoons, and are typically found in relatively deep waters. ''Rhabdolichops'' are typically overall grayish, dusky or semi-translucent resulting in whitish/pinkish color. There are two species groups: One (including most species) where the

pectoral fin Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish. They are covered with skin and joined together either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as ...

s are relatively short and without conspicuous pigmentation, and another (including ''R. lundbergi'' and ''R. nigrimans'') where they are relatively long and all dark or dark at the tip. Depending on the exact species, they have a maximum total length of . They feed on small invertebrates such as aquatic insect larvae and

zooplankton Zooplankton are the animal component of the planktonic community ("zoo" comes from the Greek word for ''animal''). Plankton are aquatic organisms that are unable to swim effectively against currents, and consequently drift or are carried along by ...

Species

There are currently 10 species in this genus: * '' Rhabdolichops caviceps'' ( Fernández-Yépez, 1968) * '' Rhabdolichops eastwardi''

Lundberg Lundberg is a surname of Danish language, Swedish origin. Lundberg means "wooded hill" or "mountain grove". Notable people with the surname include: A *Agneta Lundberg (born 1947), Swedish Social Democratic politician *Alfred Lundberg (1852–1935 ...

& Mago-Leccia, 1986 * '' Rhabdolichops electrogrammus''

& Mago-Leccia, 1986 * '' Rhabdolichops jegui''

Keith Keith may refer to: People and fictional characters * Keith (given name), includes a list of people and fictional characters * Keith (surname) * Keith (singer), American singer James Keefer (born 1949) * Baron Keith, a line of Scottish barons ...

& Meunier, 2000 * '' Rhabdolichops lundbergi'' Correa, Crampton &

Albert Albert may refer to: Companies * Albert (supermarket), a supermarket chain in the Czech Republic * Albert Heijn, a supermarket chain in the Netherlands * Albert Market, a street market in The Gambia * Albert Productions, a record label * Alber ...

, 2006 * '' Rhabdolichops navalha'' Correa, Crampton &

, 2006 * '' Rhabdolichops nigrimans'' Correa, Crampton &

, 2006 * '' Rhabdolichops stewarti''

& Mago-Leccia, 1986 * '' Rhabdolichops troscheli'' ( Kaup, 1856) * '' Rhabdolichops zareti''

& Mago-Leccia, 1986

References

Sternopygidae Fish of South America Freshwater fish genera Taxa named by Carl H. Eigenmann {{Gymnotiformes-stub