But why do  they always seem hungry? They are always searching for food at the top. I don't know if I should feed them maybe 3 times a day? How many times is okay?

Goldfish always look hungry, but dont' be fooled! They probably aren't! Feed them a few pellets or flakes of food 3 times a day, and observe how they look, do they frantically search the bottom for more, if so then they have been fed the right amount, but, if your goldfish look a bit plumper, then they are overfed. Feed them less next time.

3 times a day, it's a good amount! Make sure you feed them a variety of foods, different pellets and flakes for example, along with some live foods (they're sold freeze-dried).

But it's a good thing that your fish show appetite A healthy goldfish is a bit hungry, not staring, but hungry And if you'd feed them until they simply lose interest in the food, you're looking for trouble. So decide for a certain amount of food and stick with it! The important thing is that the fish get the nutrients needed.