Perch Dissection Lab: By Ajay Singh - Guzman - PAP Bio - 4th
Impact of Perch on Humans
The perch has a huge impact worldwide; having once been one of the most common fish in the world, many species of the perch are now going extinct due to the rising demand of fish from consumers (for eating). The extinction of such a large composition of the fish population could cause environmental problems in the future. For example, the most abundant species of perch is the Nile Perch. Because the perch multiply very quickly by laying a large quantity of eggs, they can take up too much space in the water. Since the Nile Perch is a common dish in this part of Africa, however, this minimizes the environmental impact the perch could have on the Nile ecosystem.
Ecology of the Perch
Perch are carniverous and feed mainly on smaller fish, shellfish, or insect larvae. Other prey includes earthworms, beetles, freshwater leeches, crayfish, mosquito larvae, and catfish.
Perch are found in freshwater areas, such as small ponds, rivers, lakes, or streams. Here, they live usually toward the shore along moderately vegetated areas.
Taxonomy and Evolution of the Perch
Circulatory System of the Perch
All fins, operculum, eyes,
Operculum, Atrium, Ventricle, Pharynx, Esophagus, Stomach, Liver, Intestine, Kidneys, Swim Bladder, Bulbous Arteriosus
- Perch breed toward the beginning of the summer and the end of spring, and lay their eggs along vegetation in gelatinous strands.
- As they grow, perch develop a humped back.