You are going to continuously have problems with these types of cichlids in a 55. Jags are highly territorial and soon it will want the 55 for itself. You will have fights between the Oscar and both of the Parachromis until you separate them.liljag;4734303;4734303 said:he not realy aggressive with food he just attacks my oscar. I have 55 gal but all my fish are under 4 or 5" and i have jag oscar catfish and a loiselle