The Perch In Water

Perch Dissection Pre-Ap Biology 3/12/14 - Nima Desai 6th

Objectives

The objective is to learn about the external and internal anatomy of a perch. Also focus on the organs, structures, and functions of the Respiratory System. Students will also understand the ecological role of the perch.

Perch Background

The perch may be really tasty to eat, but let's find out more about it. Out of the many types, the Yellow Perch has the genus species name of Perca flavescens. This type of fish is found in the American and Southern Canadian area. Perches live in freshwater like ponds, lakes, streams, and rivers. Perches are carnivores. They eat worms, small fish, nymphs and larvae, as well as many small perch. Perches are eaten by other bigger fish and fish eating birds like gulls, loons, kingfishers, eagles and herons. People can also be considered predators of Perches. Perches have BIG eyes so they can see their prey easily. Perches also have spines for protection and to stiffen fins for swimming. They also have stripes to hide in weeds for protection and ambush prey.

Perch Dissection

Don't know the internal and external parts of a perch? Don't know how to dissect a perch? Click on the play button below to learn more!
Lenny's Scientific Dissection | Perch Fish
Perch Online Dissection 1

Don't like the disgusting Dissections? Try the online Dissections! Anterior Region

Anatomy Quiz

Make sure you know your anatomy!

Respiratory System

  • The gills, operculum, gill chamber, nostrils, are part of the respiratory system of a perch. When the perch opens it's mouth to take in water, the water passes over a set of gills and the lamella which directs the water over filaments. These filaments are attached to the gills and are supplied with blood. The concentration of oxygen is higher in the water than in the blood so oxygen enters the blood and carbon dioxide leaves. The respiratory system also works with the circulatory system because blood needs to be oxygenated blood to be used. The circulatory system uses the oxygen from the respiratory system to circulate the blood to needed places.