Has anyone experience of keeping two silver arowana's in the same tank?

Most people will say no. Have a backup plan if you decide to get it.

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The problem is you have a 2 footer now if they started small and grew together they would be fine but as big as he is now expect a blood bath when you drop the other in there because from my experience it will not go well
All my success from mixing aros was getting them small and growing them together my 2 silver, 1 jardini, and 1 black all started at around 3 to 4 inches and grew together so by the time they were 2 feet or close to 2 feet there was no issues I had a single aro in the past before all those and tried adding another with him and he destroyed the new one I had to put the other on in another tank till I could find him a good home so unless you have a couple big tanks I would pass but that's just my opinion


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Unless your tank is 7x4' it isn't much space for two 2' [and growing] silvers, IMO. I think it is asking for trouble, but it does occasionally work (more often when they're raised together, and/or in very large tanks). If you try it having the ability to separate them immediately if needed is a necessity.

Yeah, it's a much bigger risk introducing them at that size. When raised together from smaller sizes, they can get dominance roles established without as much damage being done. Mature fish can inflict greater damage in skirmishes. Like the others said, have a backup plan.

I had two silver arros and a silver and black arro in my 500 without any issues.