All About Perches -Erica Chen

Vu - PreAP Biology - April 6, 2014 - Period 3

Objective: Students will be learning the anatomy of a perch specifically the organs, functions, and interactions of the perches circulatory system.

Perca

Perches belong to phylum Chordata. They live in lakes, ponds, and streams where moderate amounts of vegetation provide cover, food and protection. Perches feeds on insects, crustaceans, worms, eggs, invertebrates, and small fishes. Their predators are humans and large fishes such as bluefish, striped bass, and walleye. For their role in its ecosystem, perches serve as an important predator and prey. Its adaptations are the different types of fins for transportation, water-adapted eyes, and scales for external protection.

Taxonomy

Kingdom: Animalia

Phylum: Chordata

Superclass: Osteichthyes

Class: Actinopterygii

Subclass: Neopterygii

Infraclass: Teleosei

Order: Perciformes

Family: Percidae

Genus: Perca

Evolutionary History and Relationship

Lab Dissection

Bony Fish (Perch) Anatomy

Circulatory System

The circulatory system of a perch is a low pressure, single loop system. This means that there is one direction of blood flow from the heart which acts as a pump. Deoxygenated blood is pumped throughout the heart and goes onward to the gills. This is where blood becomes oxygenated, getting rid of carbon dioxide. From here, the blood goes straight to the body.

Circulatory System Interaction

Circulatory System of the Perch

Interesting Fun Facts

  • Perches are one of the most abundant fish species
  • Perches have over 6,000 species and 150 families
  • Female are larger while males are darker
  • Perches shed their eggs in long gelatinous rows and wove under tree roots or aquatic plants
  • Young fishes require green water and egg yolk paste as first food