The Behavior of Fish
General Chemistry, Period 8
06 November 2011
Fish behavior varies depending on what lures are used to catch it, the time of day, the temperature, the time of year, the environment around them, The Ph level of water, and basic instincts. Different Fish are attracted and react in varying ways to different things. One of the more abnormal reactions found in fish are found in captive and wild fish. This reaction is called tonic immobility. Some of the freshwater fish that go into tonic immobilization are trout, goldfish and some species of minnow. Tonic immobilization is a state of temporary paralysis brought on in many animals by stress or attack by predators (www.howfishbehave.ca/pdf/Feigning%20death.pdf). Another rather interesting reaction that fish have to certain situations is called mobbing. Mobbing is usually targeted towards animals that are seen as threats. Some scientists have found bluegill, sunfish, and largemouth bass to be some freshwater species to do this (www.howfishbehave.ca/pdf/Mobbing%20in%20fishes.pdf). When large animals such as snapping turtles go through colonies or breeding grounds of these fish, the more matured males and females surround and follow the turtle and elicit threats by rushing the turtle and bumping into it until the threat has left the area. Many people like to think of fish as being smart animals but certain tests have shown the contrary. It’s been shown that fish in a small school will follow a lead fish into danger. If the school is big enough however, they will not follow the fish due to its irrational decision. It’s been shown that if there are two or more irrational leaders in a school of fish, even in a large size, the group as a whole will follow the leaders into possibly dangerous and fatal situations. There are many theories as to the science behind the behavior of fish. One of the many ideas is that the Ph level of the water helps regulate the behavior of...
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