Perch Dissection Lab

Andres Sanchez/ Pre-ap Biology/ 7th period/ Guzman

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Percidae, Perca

The perch, of which there are three species in different geographical areas, lend their name to a large order of vertebrates: the Perciformes, from the Greek perke meaning spotted, and the Latin forma meaning shape.

The general body type of a perch is somewhat long and rounded. True perch have "rough" scales. On the anterior side of the head are the maxilla and lower mandible for the mouth, a pair of nostrils, and two lidless eyes.

Scientific Classification

Kingdom: Animalia

Phylum: Chordata

Superclass: Osteichthyes

Class: Actinopterygii

Subclass: Neopterygii

Infraclass: Teleostei

Order: Perciformes

Family: Percidae

Genus: Perca


Students will be learning about the external and internal anatomy of a Perch. Students will focus on the organs, structures, and functions of the Circulatory system. Students will also understand the ecological role of the Perch.
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Perch Life Cycle

Perch spawn in the spring when water temperatures are between 45 and 50 degrees. Usually this happens in March or April. The fish prefer water that is 5 to 10 feet deep with a gravel bottom or vegetation. One female perch can lay up to 25,000 eggs!The eggs take 20 to 25 days to hatch.

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Perch are found mostly in lakes and ponds. Also found in most streams. This fish are highly unable to be found in oceans or any bodies of salt water. This fish needs water with lots of vegetation.
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The Great Blue Heron are one of the top predators of the perch. The Great Blue Heron is a large water bird which can grow up to four feet tall, with a wingspan of nearly six feat as an adult.

Evolutionary Relationships of a Perch

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Perch external

Includes: anterior dorsal fin, posterior fin, tail fin, anal fin, pelvic fin, and the pectoral fin.
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Circulatory System

A two-chambered heart, arteries, gills, capillaries, and veins are the organs of the circulatory system in the Perch. Deoxygenated blood from the body is pumped through the heart forward to the gills. From the gills, where it is oxygenated, the blood goes directly to the body. Thus the blood makes a single circuit during which it is pumped, oxygenated, and distributed to the body, before it returns to the heart. In this pattern of circulation the heart pumps only deoxygenated blood.