''Etheostoma obama'', the spangled darter, is a species of freshwater

ray-finned fish Actinopterygii (; ), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish that comprise over 50% of living vertebrate species. They are so called because of their lightly built fins made of webbings of sk ...

, a darter from the

subfamily In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end botanical subfamily names with "-oideae", and zo ...

Etheostomatinae Etheostomatinae is a species-rich subfamily of freshwater ray-finned fish, the members of which are commonly known as the darters. The subfamily is part of the family Percidae which also includes the perches, ruffes and pikeperches. The family ...

, part of the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Percidae The Percidae are a family of ray-finned fish, part of the order Perciformes, which are found in fresh and brackish waters of the Northern Hemisphere. The majority are Nearctic, but there are also Palearctic species. The family contains nearly 250 ...

, which also contains the

perch Perch is a common name for freshwater fish from the genus ''Perca'', which belongs to the family Percidae of the large order Perciformes. The name comes from , meaning the type species of this genus, the European perch (''P. fluviatilis'') ...

es, ruffes and pikeperches. It is

endemic Endemism is the state of a species being found only 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 foun ...

to the eastern

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

where it is only known to occur in the Duck River and the Buffalo River, both in Tennessee.

Discovery and naming

Steven Layman of Geosyntec Consultants and Rick Mayden of

Saint Louis University Saint Louis University (SLU) is a private university, private Society of Jesus, Jesuit research university in St. Louis, Missouri, United States. Founded in 1818 by Louis William Valentine DuBourg, it is the oldest university west of the Missi ...

studied the freshwater darters, most of which are native to

Alabama Alabama ( ) is a U.S. state, state in the Southeastern United States, Southeastern and Deep South, Deep Southern regions of the United States. It borders Tennessee to the north, Georgia (U.S. state), Georgia to the east, Florida and the Gu ...

and

Tennessee Tennessee (, ), officially the State of Tennessee, is a landlocked U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders Kentucky to the north, Virginia to the northeast, North Carolina t ...

in the United States. While they were studying color variation of '' Etheostoma stigmaeum'', the speckled darter, Layman and Mayden discovered that there were populations with enough variation that they should be described as unique species. This species was one of five distinct species of fish that were named after former U.S. presidents and a vice-president, based on their leadership in conservation. ''E. obama'' was named after

Barack Obama Barack Hussein Obama II (born August 4, 1961) is an American politician who was the 44th president of the United States from 2009 to 2017. A member of the Democratic Party, he was the first African American president in American history. O ...

, for his work "particularly in the areas of clean energy and environmental protection, and because he is one of our first leaders to approach conservation and environmental protection from a more global vision," according to Layman.

Description

''Etheostoma obama'' males have bright orange and iridescent blue speckles, stripes, and checked patterns, with a bright fan-shaped fin that has orange stripes. The males can reach up to long, while the females reach long. 29% of the studied fish had palatine teeth.

References

{{Taxonbar, from=Q333408

obama Barack Hussein Obama II (born August 4, 1961) is an American politician who was the 44th president of the United States from 2009 to 2017. A member of the Democratic Party, he was the first African American president in American history. Ob ...

Taxa named by Steven R. Layman Taxa named by Richard L. Mayden Fish described in 2012

Discovery and naming

Description

See also

References