soo i recently had a tough time with some of my south American cichlid aggression (3 oscars and jag catfish and bichir) soo i posted on here for some help and someone told me add more fish but i was sketchy about soo i went to 1 of my lfs just to try the gamble and picked a small school of silver dollars roughly 5-6 in and by my surprise it worked out in a way still some light chases but nothing more i think they will calm more in time its might seem crowded i kno(dont need bigger tank facts) but no1 seems to be much bothered>> thanx everyone for all help feel free to post me