Well i woke and saw 3 scale from my aro at the bottom of my tank lol,but doesnt look like a fight,look to me more like a cause from him jumping,since i got the tiger in,the aro became jumpy,probably spooked because of someone big below him,after monitoring quite a while,the tiger does not disturb aro or stingray,hes just a nice guy,but the aro seems to keep going below towards the tiger and makes the tiger turns back aggresively,i hope it works well after a few days,its been day 2 the tiger is in my tank,any tips guys?