Circulatory made Simple
A Brief Beginning
The Optimal Objective
Perch are born from small, underwater, adhesive eggs as larvae and grow and mature to become adult perch. Perch are carnivorous fish, feeding on smaller fish, shell fish, and insect larvae, but can be caught with any bait. Perch can grow up to be very small or very large depending on the species.
Perch live in fresh water areas like ponds, lakes, streams, and rivers. Perch are found all over the world and can even be caught ice fishing. They are most abundant in Lake Erie. The perch in the picture was caught in the Nile River, Egypt.
Large fish like bass, trout, and pike and birds like eagles, herons, and gulls eat adult perch while small fish like sunfish and crappies eat the larvae.
Revolutionary Evolutionary Relationships
Harmful Human Impacts
Feasibly Fun Facts
- Perch do not have eyelids.
- Most perch weigh about one pound, the largest perch caught was more than four pounds in the Delaware River in 1865.
- When perch feel threatened, they raise their spiny fins.
- Perch lay between 4,000 and 40,000 eggs.
- Perch lay eggs in strings.
- Male perch are more brightly colored than females.
- Perch sometimes eat their eggs.
- Perch has high amounts of cholesterol.
Catching Perch and other Collosal Fish
In this picture, you can see the gills, which are actually kind of feathery. The pharynx leads to the esophagus which leads to the stomach which leads to the intestine, because food travels through this path and is digested. The heart pumps blood through the fish's body, a closed single circulatory system. The liver filters wastes.
The kidney, which makes urea, is right above the swim bladder, a balloon-like object that helps keep the fish afloat. The anus is located at the bottom and it is where the perch excretes wastes through. The eye socket holds the eye which senses light, and the mouth is where the food that the perch eats goes.
(Not dissection pictures) The dorsal fins are the fins on top, and they function to stabilize and turn the perch. The pelvic fins are on the sides, and control direction. The caudal fin, or the tail, helps push the perch. The anal fins help with stabilization and turning. The pectoral fins, underneath the pelvic fins, allow up and down movement.
The Crazy Circulatory System
Hatch, Jay T., and Nicole Paulson. "Fishes of Minnesota-Yellow Perch." Fishes of Minnesota. University of Minnesota, 23 Oct. 2002. Web. 09 Apr. 2014.
Palande, Leena. "Perch Fish Information." Perch Fish Information. IBuzzle, 29 June 2010. Web. 09 Apr. 2014.
"Perch." Wikipedia. Wikimedia Foundation, 04 Aug. 2014. Web. 09 Apr. 2014.
Fish Phylogeny. Digital image. Bbc.co.uk. BBC, n.d. Web. 9 Apr. 2014.
Hainey, R. Biological Magnification. Digital image. Biological Magnification. EDUC551RHainey, 2014. Web. 9 Apr. 2014.
Nile Perch. Digital image. Nile Perch Photos. Animal Planet, n.d. Web. 9 Apr. 2014.
Odino, Martin. Eagle catching fish. Digital image. Stop Wildlife Poisoning. Wildlife Direct, 13 July 2009. Web. 9 Apr. 2014.
Perch life cycle. Digital image. Wetland Information. Australia, 22 Mar. 2013. Web. 9 Apr. 2014.
Perch swimming. Digital image. Wikipedia. Wikimedia Foundation, n.d. Web. 9 Apr. 2014.
Dunkinson, Matt. Escargot. N.p.: Vimeo, 2013. Video.
Fish and Fishing Games. N.p.: Onlinefishinggames.net, n.d. Online Game.