General Hamlet's Dissection

It's a cod fish! It's a tuna fish! No... IT'S A PERCH FISH!

Jackson Hardin Vu- PAP BIO-4

General Hamlet's Background Info

Objectives:

  • to observe the external and internal anatomy of a perch.


Background Information:

  • Scientific Name- Perca flavescens
  • Habitat- Gen. Hamlet is a carnivorous fish that are most commonly found in small ponds, lakes, streams, or rivers. He feeds on smaller fish, shellfish, or insect larvae, but can be caught with nearly any bait. Even though Gen. Hamlet can be found all over the world, he is most likely to be found in the Great Lakes.
  • Predators- Largemouth and smallmouth bass, northern pike, musky, walleye, bowfins, burbot, lake trout, and others
  • Prey- Insect larvae, crustaceans, and/or small fish, depending on the forage base available.
  • Ecological adaptations- He can live anywhere from fertile water, eutrophic water, and even turbid water. General Hamlet also has specialized teeth called palatines that they use to eat other small fish like young large mouth bass,minnows and even some insects. He can also filter out zooplankton with their gill rakers, which are small filters in the gills.

INTERESTING FACT!

Yellow perch can reach a maximum size of 18 inches!
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LETS EXPLORE GENERAL HAMLET'S CIRCULATORY SYSTEM!

INTERESTING FACT!

The largest yellow perch recorded in Maryland was caught in a Harford County farm pond in 2003 and weighed 3 lbs., 5 oz.!

General Hamlet's Ecology

  • Zooplankton is the primary food source for young and larval perch. By age one, they shift to organisms like midges and mosquitos. Large adult perch feed on invertebrates, fish eggs, crayfish, mysid shrimp, and juvenile fish. About 20% of the diet of a yellow perch over 32 grams in weight consists of small fish.
  • Their habitat is usually along the shore among reeds and aquatic weeds, docks, and other structures. They are less abundant in deep and clear open water or unproductive lakes.
  • In eastern North America, yellow perch are an extremely important food source for birds such as double-crested cormorants. The cormorants specifically target yellow perch as primary prey. Other birds also prey on them, such as eagles, herring gulls, hawks, diving ducks, kingfishers, herons, mergansers, loons, and white pelicans.


  • Perch are commonly active during the day and inactive at night except during spawning, when they are active both day and night. Perch are most often found in schools. Their vision is necessary for schooling and the schools break up at dusk and reform at dawn. The schools typically contain 50 to 200 fish, and are arranged by age and size in a spindle shape. Younger perch tend to school more than older and larger fish, which occasionally like to travel alone, and males and females often form separate schools. Some perch are migratory, but only in a short and local form.

INTERESTING FACT!

The European perch is dark olive on the back with gold sides marked by vertical dark bars. The yellow perch is similar but is a lot lighter in color!

General Hamlet's Taxonomy

Scientific Name: Perca flavescens


Kingdom: Animalia

Phylum: Chordata

Superclass: Osteichthyes

Class: Actinopterygii

Subclass: Neopterygii

Infraclass: Teleostei

Order: Perciformes

Family: Percidae

Genus: Perca

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INTERESTING FACT!

Yellow perch are bullet shaped with a yellow body and six to eight dark vertical bars from the back almost to the belly!

Gen. Hamlet's Population Dynamic's

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