Aggression in the tank

I have 2 silvers that are about 8 inches in a 180g. They keep going side by side and then attacking each other. Do I need to separate the two or will it eventually go away when one becomes more dominant? I have video but I can't upload it on mobile for some reason when I get a chance I'll load it.

rodger said:

Seperate them now before it is too late. You will be needing a bigger tank anyway.

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Did I say I had one tank?