If you want to go on a holiday and you don’t want to leave your discus home starving, it is better not to feed them while you are away than to leave this task to your neighbor. Most fish die when left alone not because of hunger but because the people they are left in the care of feed them too much.Discus that are larger than 10cm can survive very well without food for 2-3 weeks. Older and larger fish can survive even longer, with some specimens being able to survive up to 2 months without food.The reason why these fish can survive so long without food is that in the wild these long periods of fasting happen naturally and they can have a beneficial effect on their health. You also won’t have to worry about changing the water during this period since without food in the tank, there will hardly be any contamination.