i have a jardini hes about 5-6 inches, i put him in my 160 with my 11 of peacock bass ranging from 6-11 inches and silver arowana is about 8-9 inch. i put him in yesterday, and he got alittle beat up so i changed the water to try and ease tension between them and to help the jardini heal back up. i didnt go to sleep till 5 am, and suddenly woke up at 8 am and knew something was wrong. i go and check my tank and sure enough my jardini got really tore up. one of his barbel almost torn off, 1/3 of his front area of the scales are almost gone. he still swims fine but slow. i had no other tank setup for him to go in, so i decided to pull my 12 gallon tank out put water from the 160 to the 12 gallon, pour 5 ml of melafix 2 sponge filter with bio in it, lots of aeration. was wondering what else should i do? i seriously dont want to lose him since i got him at 1.5 inch