Can i add a leaf fish in my 55 gallon with a terror, dempsey, parrot, severum, and kribensis?

I have a 55 gallon tank with a green terror, jack Dempsey juveniles, a 6 inch parrot and Peruvian green severum, a 4 inch kribensis, and a 4-6 inch red tail cat. I'm looking to add some kind of pleco and a leaf fish. Before everyone gets on me about my red tail, i already understand his growth rate and everything there is to know about it. I also have plans to put him in a 500 gallon tank when he gets bigger.