以下是一篇关于介绍普通的鱼的英文作文的写作建议： **

Introduction of a Common Fish

** When writing an English composition about a common fish, you can start by choosing a specific type of fish, such as goldfish or carp. In the beginning, provide some basic information about the fish. Mention its name, appearance, and common colors. For example, if you choose goldfish, you could describe them as having shiny scales and various colors like orange, red, and white. Then, talk about its living environment. Explain where the fish is usually found, whether it's in rivers, lakes, or ponds. Also, mention the water conditions it prefers, such as the temperature and the level of cleanliness. Next, discuss its behavior and habits. Does it swim alone or in groups? What kind of food does it eat? How does it hunt or search for food? Finally, you can add some interesting facts or unique features of the fish. Maybe it has a special way of protecting itself or an interesting breeding pattern. Remember to use simple and clear language, and organize your thoughts logically. Use descriptive words to make your writing vivid and engaging.