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This sounds like they're fighting for dominance which should never be happening because YOU and the members of your family are supposed to be the alpha dogs (pack leaders). If not corrected, this may grow into more serious possessive behavior like protecting the food, toys, the couch and whatever the dogs think to be 'theirs' from you and the members of your family. Feeding them separately will seemingly solve the problem but it doesn't address its cause so it's very possible they'll keep fighting for dominance in other situations. What you really need to do is to work on becoming a pack leader for them both.
A few simple tips are below.
In the wild, the alpha dog always eats first so your dogs should ideally be fed after you have eaten.
Establish routines for feeding and other activities. Always use the same commands, times and places for the same activities. Feed the dogs at the same time every day, at the same place, and teach them to obey simple commands like "sit" and "wait". It's also a good idea to teach the dogs to obey "leave it" command.
Do not start feeding the dogs if they're overly excited or tensed. If this is happening, ignore the dogs till they are calm.
After the dogs have eaten, remove leftovers. If there's no food, there's no food aggressiveness.
Whenever you communicate with the dog, you should remain calm. If you get nervous, the dogs will feel your emotions and become nervous too, which can result in more aggression.
Keep in mind that your dogs's unwanted behavior like snapping, barking, growling is actually rewarded and therefore reinforced each time you back off. You should be consistent and persistent.
Give the dogs a good amount of mental and physical stimulation every day to drain their energy. Dogs are usually much calmer and more balanced when they are well exercised.
Rough games are not a good idea in my opinion because they stimulate aggression.
You can find some useful information here as well:
People are waiting to help.