Aro and atf can do fine with each other as long as u provide enuf space to swim around. Mine were in a 600 gal prior to the 1500 gal they are in now. I have seen the atf take near swipes at the aro but im not sure if its all for show or territory. Nothing serious or damage evident. As far as the tig is concerned all in time. Keep him in a calm and non aggressive tank and he will flourish! Mine is over 2 ft. One thing about them they dont tolerate other shovelnose cats well especially in their territory. They will do their head shaking and sometimes snap at the intruders! I have mine with a 17" piariba and when they were in the 600 gal they barely would cross paths or thw tig got upset. Now in the big tank i haven't noticed any issues and they have been near each other many times. Perhaps new environment has caused that.