aggresion between falactus-altus?

[cudamaster13]

i was wondering which red tailed barracuda is more aggresive the acestrohynchus falactus, or the acestrohynchus altus?

 

[lix.ma14]

I think they can all be kept together pretty well in a large tank with a good filteration and a group of them together. It might even out the agresion.