It was gonna happen sooner or later but my os arent getting along problem is this I had a 11 inch o in a 55 gallon that was getting to big so i got a nice christmas gift from my wife 100 gallon ofcourse it looked empty so i got another o for company for two months they were fine now the new o thats only 5 inch is picking on my 12 inch my bigi o is a wussy there not lip locking the problem is the little o wont let him eat every time i put food in he wont let the big eat he chases him away pushes him even thow hes smaller i new from the get go this mite happen figured i would give it a try anyway went got some silver dollars changed the decore around and lowered the temp from 82 to 78 i was told 82 is spawning temp and sometimes helps keep aggresion down would removing the little one for a few days let the big establish teratory then put the little one back in i have a good home to give the o two as a back up plan and im not atached to him my big guy his names red is 16 months old hes part of the family would a severume or maybe a fire mouth be a less aggresive tank mate as a option thanks for any info or ideas .