Lions and Tigers and...Perches?

Abbey Boggs 4/9/2014 Mitcham-PAP Bio-6

Lab Objective

The objective of this lab is to learn about the interior and exterior anatomy of a Perch.


The word "Perch" refers to fish of the genus Perca. These fish live in freshwater and eat organisms such as minnows, small fish, and various aquatic insects. Sea creatures including larger fish and turtles eat Perches. Perch help maintain aquatic populations by eating the organisms that they prey on, which helps to prevent the overpopulation those species.

Perch Circulatory System

Perch circulatory systems consist of:

1. A heart consisting of an atrium and a ventricle, which helps regulate the flow of oxygenated and deoxygenated blood

2. Gills, which obtain oxygen from water

3. The liver, which blood always travels through

4. The kidney, which balances internal fluids' pressure

Functions of a Perch's Circulatory System

A Perch's circulatory system functions to send deoxygenated blood off to the lungs, and to send oxygenated blood throughout the fish's body. When blood first travels through the gills, the blood obtains oxygen. The oxygenated blood then travels throughout the rest of the Perch's body. The circulatory system of the Perch is closely related with the respiratory system, because without the gills (a vital organ in the respiratory system), a Perch's blood would not be able to receive oxygen. Without oxygen, a Perch could not survive.

Human Impact

Perch have been found living in man-made lakes and other unnatural waterways, rather than in the natural habitats that are ideal.

Works Cited (Sources)