It has no scales on its head and is toothless. It makes a point not to even have a genuine stomach. Yet, despite such apparent disadvantages, the goldfish is still the most widely kept pet in the world.
The goldfish is an end relative of the regular carp and, such as its cousin, it fails to possess much scales on the top of its head. As a result, the goldfish has been referred to as being bald. Also, in keeping with its closest relations, the goldfish has no teeth in its jaws. However, it does have grinding teeth in its throat.
