Fish are aquatic animals that live in the water and are adapted to life in an aquatic environment. There are over 34,000 known species of fish, and they can be found in a wide range of habitats, including oceans, rivers, lakes, and ponds.

These are cold-blooded animals and are able to regulate their body temperature through the water in which they live. They breathe using gills, which extract oxygen from the water and filter out waste products.

Fish come in a variety of shapes, sizes, and colors, and they can be found in almost every corner of the globe. Some common examples of fish include salmon, tuna, cod, and goldfish.

Fish play important roles in the environment as part of the food chain, and they are an important source of food for many people around the world. They are also popular pets and are often kept in aquariums or ponds.

"Here are some additional facts about fish:"

Fish are ectothermic, which means that their body temperature is regulated by the water in which they live. They do not have to expend energy to maintain a constant body temperature like mammals and birds do, which allows them to conserve energy for other functions.

Fish have a variety of adaptations that allow them to move through the water. These include fins, which provide lift and help them steer, and scales, which reduce drag and help them glide through the water. Some fish also have specialized organs, such as lateral lines, which help them sense vibrations and changes in water pressure.