Paging Through Perches
Anusha De 4/9/14 Vu-PAP Bio- P3
Phylum: Chordata - spine, endoskeleton
Class: Osteichthyes - bony, breathes with gills
Order: Perciformes - "perch-like"
Family: Percidae - fins with soft rays and stiff spines, anal fin has 2 spines
Genus: Perca - lidless eyes, nostrils
Species: Flavescens - golden yellow coloration, 5-8 dark bands
Perch at a Glance
Anatomy and Dissection
The Circulatory System
- Heart - The two-chambered heart contains of 4 parts: sinus venosus, atrium, ventricle, and bulbus arteriosus.
- Gills - Gills oxygenate blood. They are one of the most important components of the circulatory system.
- Arteries - Arteries carry oxygenated blood away from the gills and distribute it throughout the body. The two largest arteries in the perch are the ventral and dorsal aorta.
- Capillaries - Capillaries carry oxygenated blood from the arteries to the tissues, and carry deoxygenated blood to the veins.
- Veins - The veins carry deoxygenated blood back to the heart.
- There are more than 6,000 species of perch.
- The female perch is larger than the male perch.
- Sometimes schools of perch are separated by gender.
- Adult females lay over 10,000 eggs at a time during reproduction.
- Yellow perch lay their eggs in long, connected ribbons.
- A perch's esophagus is flexible, which means it can accommodate foods of all sizes.
- The largest yellow perch ever caught weight 3 pounds and 4 ounces.
- Perch eggs hatch within 11 to 27 days, depending on water temperature.
- Perches have sharp fins that scare off predators.
- Perch are most active during the day.