Aquarium fish in a room aquarium - what could be simpler?! They are easy to care for and require very little time. However, we cannot take our eyes off our neighbors on the planet, gracefully gliding through the water. The aquarium - a window into the mysterious water element for us - is more than one thousand years old. Many reference books on ornamental fish have been published. But the mystery of their attractiveness to humans remains unsolved... Did you know that even in ponds near Moscow you can find new mutations of silver crucian carp - a relative of the fish from which the famous golden chi - the ancestor of all breeds of goldfish - was obtained in Ancient China? The book tells about all the options for aquariums invented by man so far, and the simplest, low-maintenance underwater inhabitants.