Percina
Encyclopedia
Percina is a genus
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of small bony fishes of the family
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 Percidae
Percidae
The Percidae are a family of perciform fish found in fresh and brackish waters of the Northern Hemisphere. The family contains about 200 species in ten genera...

, mostly from North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

. Like similar Etheostomatinae they are called "darter
Darter (disambiguation)
Darter may refer to:Animals* Darters or snakebirds, birds of the genus Anhinga* Fishes of several Percidae genera:** Ammocrypta ** Etheostoma ** Percina...

s". More specifically the genus as a whole is known as roughbelly darters, while certain species
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 of Percina with a pattern of vertical
Vertical direction
In astronomy, geography, geometry and related sciences and contexts, a direction passing by a given point is said to be vertical if it is locally aligned with the gradient of the gravity field, i.e., with the direction of the gravitational force at that point...

 bars on the flanks are called logperch
Logperch
logperches are a group of fish in the genus Percina of the family Percidae. There are 11 species of logperch, native to eastern parts of the US and Canada. The fish inhabit clear, gravelly streams and lakes, reaching a maximum size of about 18 cm and a maximum age of about 3 years...

es
.
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