Nemo no more; Perch Dissection

Melissa Chiu Mitcham 2

Objective

People will be learning about the circulatory system of the perch, the circulatory system is closed. They only have one atrium and one ventricle as a chamber in their heart. Students will learn more about the perch, where it lives, and what it eats.

Background Information

Perca, also known as Perch, live in pools of water, slack water with moderate vegetation. Their only predator are bigger fish, while their prey are insects, smaller fish and anything roaming the ground. The have gills to suck the oxygen out of the water, fins and tails for swimming, and scales to protect their bodies.

Background Information

Perch fish are distinguished between species by looking at the bands and the color of the perch fish.Perch fish are freshwater species belonging to the family Percidae. With more than 6000 species and over 150 families, they are distributed largely among different geographical locations.Adults migrate shoreward into the shallows of impoundments and often into tributary streams to spawn.
When they occur in brackish waters, males tend to reach the freshwater spawning areas first and do not migrate downstream until the females leave. When females arrive, they lay their eggs in large gelatinous strands, usually suspended from some type of structure or organic debris, which are then fertilized by multiple males.
Hatching occurs 11-27 days after fertilization, depending on water temperature.
Female yellow perch mature between ages 2 and 3 and can produce between 5,000 and 109,000 eggs. Yellow perch are known to live as long as 13 years.
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