Perch

Virtual Dissection Lab Pre-AP Biology Vu P2

Perca

Perch are found in the Percidae family, in the order Perciformes. It is in the Animilia kingdom and in the Chordata phylum. This fish is a freshwater gamefish having three different species in different geographical areas. Though many fish are considered as perch, to be considered a true perch you must come from the Percidae family. Perch are well known to be for food and sport. There are a variety of different methods to catch these fish and are known to be omnivores eating both plants and other small animals that are miniscule.

Objective

We will learn about the perch's circulatory system. Including functions and where it could be located inside of the perch

Perch Life Cycle

Perch are known mainly for food and sport but they also can serve a purpose in they respected ecosystems. They all go through the same feeding process throughout their life, keeping meals relatively similar.

Habitat

Perch are aquatic animals.They can usually be located in nearly every body of water that is semi clean. They are common worldwide and live in shallow water sometimes on the surface.

Predators

Perch have many predators mainly human, but they all so have frogs, birds, and water snakes to watch out for.

Evolutionary Relationships of Perch

Perch Dissection Tutorial

Perch Dissection.wmv

Circulatory System of Perch

gills-they enable water to exchange oxygen and ammonium as it circulates over the gills.

brain-main organ of the nervous system and is protected by the skull.

spinal cord-component of the nervous system made out of a soft fatty surface and forming a cylindrical stem inside the vertebral column.

stomach-receives food to be later digested.

fin-swimming appendages formed of a membrane and usually prickly rays located on the anterior dorsal part of the body, provides stability.

intestine-section of the digestive tract between the stomach and the anus where absorption of nutrients is carried out and waste is transformed to fecal matter.

lateral line-used to detect movements and vibration in water.

anus-terminal orifice for the digestive tract enabling ejection of fecal matter.

spleen-organ of the circulatory system were impurities in the blood are destroyed.

kidney-organ that eliminates metabolic wastes and maintains the pressure of internal fluids.

air bladder-flexible air-filled sac located above the viscera; it allows the fish to remain buoyant at a specific depth.

two chambered heart-muscular organ helping blood to circulate.

operculum-covers and protects the gills.

sex organs-in fish, females produce eggs in the ovaries and the male produces soft roe in the testes; the eggs and roe are expelled into the water, where fertilization occurs.

Circulatory System at a Glance

The circulatory system of the perch is a typical low pressure single type system in which the heart is a single pump and there is a single circuit of blood flow. They also have gills instead of lungs that are used to breath underwater enabling oxygen and ammonium around the gills. Male perch do not have sperm and instead have roe which is dispersed into the water with another female perch.
Bony Fish (Perch) Anatomy