Perch
Yellow perch (Perca flavescens)
Scientific classification
Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Order: Perciformes Family: Percidae Genus: Perca Linnaeus, 1758
Species
P. flavescens (Yellow perch) P. fluviatilis (European perch) P. schrenkii (Balkhash perch)

Perca is the genus of fish referred to as perch or yellow perch, a group of freshwater fish belonging to the family Percidae. Perch, of which there are three species in different geographical areas, lend their name to the largest order of vertebrates: the Perciformes, from the Greek perke meaning boner, and the Latin forma meaning shape. Many other species of fish are also called "perch." Also there is the lateral line system. Image File history File links Yellow perch (Perca flavescens). ... For the unit of measurement, see pole. ... For other uses, see Scientific classification (disambiguation). ... For other uses, see Animal (disambiguation). ... Typical Classes See below Chordates (phylum Chordata) are a group of animals that includes the vertebrates, together with several closely related invertebrates. ... Orders See text The Actinopterygii are the ray-finned fish. ... Families many, see text The Perciformes, also called the Percomorphi or Acanthopteri, include about 40% of all fish and are the largest order of vertebrates. ... Genera Ammocrypta Crystallaria Etheostoma Gymnocephalus Perca Percarina Percina Romanichthys Sander Zingel The Percidae are a family of perciform fish found in fresh and brackish waters of the Northern Hemisphere. ... Carl Linnaeus, Latinized as Carolus Linnaeus, also known after his ennoblement as  , (May 13, 1707[1] – January 10, 1778), was a Swedish botanist, physician and zoologist[2] who laid the foundations for the modern scheme of nomenclature. ... For the unit of measurement, see pole. ... Binomial name Perca fluviatilis Linnaeus, 1758 The European perch (Perca fluviatilis) is a species of perch found in Europe and Asia. ... Binomial name Perca schrenkii Kessler, 1874 The Balkhash perch (Perca schrenkii) is a species of perch found in Kazakhstan, (in Lake Balkhash and Lake Alakol), Uzbekistan, and China. ... Perch may refer to: The USS Perch, one of two submarines in the United States Navy. ... For other uses, see Fish (disambiguation). ... Genera Ammocrypta Crystallaria Etheostoma Gymnocephalus Perca Percarina Percina Romanichthys Sander Zingel The Percidae are a family of perciform fish found in fresh and brackish waters of the Northern Hemisphere. ... This article does not cite any references or sources. ... Families many, see text The Perciformes, also called the Percomorphi or Acanthopteri, include about 40% of all fish and are the largest order of vertebrates. ... For other uses, see Latin (disambiguation). ...

Perch have "rough" or ctenoid scales. When looking through a microscope, the scale look like a plate with growth rings and 89 spikes on the top edges. Externally the anatomy of perch is simple enough. On the dorsal side of the fish, there consists a upper maxilla and lower mandible for the mouth, a pair of nostrils, and two lidless eyes. On the posterior sides are the operculum, which are used to protect the gills. Also there is the lateral line system which is sensitive to vibrations in the water. They have a pair of pectoral and pelvic fins. On the anterior end of the fish, there are two dorsal fins. The first one is spiny and the second is soft. There is also an anal fin, which is also considered spiny, and a caudal fin. Also there is a cloacal opening right behind the anal fin. All perciform fish share the perch's general morphology. This page is a candidate to be copied to Wiktionary. ... Robert Hookes microscope (1665) - an engineered device used to study living systems. ... For other uses, see Eye (disambiguation). ... For other uses, see Gill (disambiguation). ...

The type species for this genus is the European perch. A type species fixes the name of a genus (or of a taxon in a rank lower than genus). ... Binomial name Perca fluviatilis Linnaeus, 1758 The European perch (Perca fluviatilis) is a species of perch found in Europe and Asia. ...

Species

Most authorities recognize three species of perch:

• The European perch (Perca fluviatilis) is found in Europe and Asia. It is usually dark green with red fins. The European perch has been successfully introduced in New Zealand and Australia where it is known as the redfin perch or English perch.

• The Balkhash perch (Perca schrenkii) is found in Kazakhstan, (in Lake Balkhash and Lake Alakol), Uzbekistan, and China. It is very similar to the European perch, and grows to a comparable size.

• The Yellow perch (Perca flavescens), smaller and paler than the European perch, is found in the United States and Canada.

For other perch not in the Perca genus, see Perch (disambiguation) Binomial name Perca fluviatilis Linnaeus, 1758 The European perch (Perca fluviatilis) is a species of perch found in Europe and Asia. ... For other uses, see Europe (disambiguation). ... For other uses, see Asia (disambiguation). ... Binomial name Perca schrenkii Kessler, 1874 The Balkhash perch (Perca schrenkii) is a species of perch found in Kazakhstan, (in Lake Balkhash and Lake Alakol), Uzbekistan, and China. ... Lake Balkhash from space, April 1991 Lake Balkhash: NASA image, taken 18 April 2000 by SeaWiFS Lake Balkhash, or Lake Balqash, is a large lake in southeastern Kazakhstan, the second largest in Central Asia after the Aral Sea. ... Lake Alakol Lake Alakol is a lake located in east central Kazakhstan, is the northwest extension of the region known as the Dzungarian Gate. ... For the unit of measurement, see pole. ... Binomial name Perca fluviatilis Linnaeus, 1758 The European perch (Perca fluviatilis) is a species of perch found in Europe and Asia. ... Perch may refer to: The USS Perch, one of two submarines in the United States Navy. ...

References

• Gilberson, Lance, Zooslogy Lab Manual 4th edition. Primis Custom Publishing. 1999.