All fish are different. Because of this, they do not all live in the same kind of waters. Fish tolerate different environmental conditions. Some of these include differing levels of salt, amounts of oxygen, types and amounts of food, water temperature, and hiding areas. The most distinguishing element of fish is salt. Some fish do not live in areas...
Some people are not aware that they have food allergy. It can be difficult to diagnose especially if allergic reactions are not apparent before. Symptoms of food allergy only appear if you exceed the tolerable amount of foods you are allergic to.