|Written by Isaac&Carmen Gutierrez|
Â Like meat, fish is nutritious because it is a good source of nutrients. In the tropical where I am from, fish is second to other foods in frequency of consumption. Fish is a good source of proteins, fats, vitamins, calcium and iodine. Eating fish helps put a stop to goiter, or the enlargement of the thyroid gland.
Iodine found in fish forms part of the hormone, thyroxin, which regulates some body development. Iodine insufficiency results to simple goiter which affects physical and mental health, the nerves, rate of heart beat and appetite. Â Studies show the omega-3 fats in fish oil protected people from sudden death.
If you're concerned about heart disease â€” whether you want to stay away from it, or you already have it and want to get healthier â€” eating one to two servings of fish a week could trim down your risk of dying of a heart attack by a third or more. Now what is the difference between salt water and fresh water fish you might ask?
A characteristic of fish structure called Osmoregulation points out a major difference between saltwater and freshwater fish. Osmoregulation passes on to how the fish control water flow across their bodies and includes the work of body tissues, gills and kidney function.
Body tissues in a saltwater fish contain a smaller amount of salt than the water in which it lives. Because the saltier surroundings in the outside water draw water from body tissues, a saltwater fish evenly loses water throughout its skin and gills. To balance and prevent dehydration, a saltwater fish drinks large amounts of saltwater, generates very little urine and oozes out salt from this water through its gills.