Practical Perch
Perch Dissection Pre-AP Biology April, 2, 2014
Perch
Perches are a yellow golden fish found commonly in North America. At full length they are 12 inches and about 4 pounds. There are about 165 different perch species. Perch fish are considered freshwater.
Habitat
Adult perch live in near shore slow moving water. While Perch Larvae go offshore to protect themselves.
Predators and Prey
Perch fish eat water fleas, and other small crustaceans. While perch are eaten by most fish eating fish, gulls and eagles and other common fish eating birds.
Ecological Niche
Perch fish are considered secondary consumers. They feed on vegetation and small crustaceans.
Lab Objectives
Students will work in group to dissect a perch. They will observe the internal and external structures of a perch.
Perch Dissection
Perch Circulatory System
The perch circulatory system in a closed system. In a closed circulatory system all the blood stays in the blood vessels. The heart forces the blood through vessels. Materials get to body tissue by diffusing through a all of a blood vessel.
Circulatory System Parts
Heart- Pumps blood to all parts of the body
Blood vessel- all they vessels that pump blood throughout the body
Arteries-a type of blood vessel that carries blood away from the heart
Capillaries- The smallest blood vessels helps bring nutrients and oxygen to the tissue
Veins- a type of blood vessel that returns blood to the heart