well heres a lesson i recently learned the hard way - that red belly pacus are not necesarrily peaceful shy community fish (which id read )I lost a beautiful 18" leiarius pictus catfish do to a 7" pacus beating 
.i had the pacu in his own grow out tank but decided to put him back in my 360g w/ my 15" giant gourami and catfish .All was fine ,or so it seemed until the day before yesterday when I noticed my catfish was pretty mangled (shredded fins and tail and numerous bite marks on his side some bloody looking) I moved him to a hospital tank went to work the next day, to come home and find him upside down- dead 
.Heres another lesson I learned - I need to thoughly check my fish daily ! Was busy w/ long hours at work last week and took for granted that i didnt see any aggression in that tank.At first i thought was the gourami but now i dont think so -they were together a long time .anyways now i get to monitor the two -dont think the gourami will take any 'nonsense' from the pacu -she seems to hate charcharins -killed two 7" silver dollars already .Sorry just wanted to vent this.
.i had the pacu in his own grow out tank but decided to put him back in my 360g w/ my 15" giant gourami and catfish .All was fine ,or so it seemed until the day before yesterday when I noticed my catfish was pretty mangled (shredded fins and tail and numerous bite marks on his side some bloody looking) I moved him to a hospital tank went to work the next day, to come home and find him upside down- dead .Heres another lesson I learned - I need to thoughly check my fish daily ! Was busy w/ long hours at work last week and took for granted that i didnt see any aggression in that tank.At first i thought was the gourami but now i dont think so -they were together a long time .anyways now i get to monitor the two -dont think the gourami will take any 'nonsense' from the pacu -she seems to hate charcharins -killed two 7" silver dollars already .Sorry just wanted to vent this.
.....what type of gourami? RTGG? or just regular giant?