Is it possible to have a lemon jake or eureka in a 55gallon tank or should I stay with the smaller 5" variety peacocks.  Also with the tank over filtered, whats everyone's thoughts on how many fish in an all male tank?  I know everyone says 1" per gallon...  Thanks for any input.  I've been looking and really want to get a blue regal, a German red/or eureka, a lemon jake/benga, are there any bright orange peacocks?  I'm trying to put together a bright colorful tank.  Any suggestions?