AK fish aquarium

Hi,I am model Aftab and 
Fish: Shapes, Sizes, Threats.

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Fish

Fish are aquatic animals that are found in almost every body of water on Earth, including oceans, rivers, lakes, and ponds. They come in a wide variety of shapes, sizes, and colors, and are an important source of food and recreation for humans.

Fish have a streamlined body that is well adapted for swimming through water. They breathe through gills, which extract oxygen from the water as it flows over them. Fish also have a lateral line system, which allows them to sense vibrations and changes in water pressure.

There are over 34,000 species of fish in the world, ranging from tiny, transparent species like the Paedocypris fish, which measures just 7.9 millimeters in length, to massive predators like the great white shark, which can grow up to 20 feet long.