how many times per day should i feed my goldfish?

 
How many times per day should i feed my goldfish?
i have two goldfish ; chedder & sterling , and i have no idea how often to feed them . if you know , please help !

oh & also i'm worried that one of my fish is eating all the food , and not leaving enough for the other one , am i worrying for nothing or should i do something . thanks ; x
My friend has a japensise fighting fish she feeds sushi once every 2 days
but i dont really know sorry
I would usely feed them twice a day in the morning and at night for goldfish man those gubbys can eat though.
Hi
i used to feed them once a day in the morning with a small pitch of food, otherwise cleaning the tank out once a month was a normal duty as the water became stagnant.
Could you tell us more about the setup? Tank size? Filter? pets question and answers,www.5d2d.com

I feed my goldfish a small amount three times a day, a couple of flakes each time.
I would leave the goldfish, usually the one who eats less food will become hungry and stand up to the other one.