I want to get two to three more fish for my tank. I have a 90 gallon tank with the following: 2 pictus catfish, 1 synodontis catifish, 1 dwarf gourami, 2 kissing gouramis, 2 blue gouramis, 2 neon gouramis, 4 mixed fruit tetras, 2 common plecos (my other pleco in the hospital tank will go back into the community tank once he is better.) Should I get more fish or keep it as is? I was thinking about Iridescent Sharks and a Red finned Shark. I have had Iridescents before and just loved them.