My tiger Oscar, in my 80 gallon tank, has had faded orange colors for a long time now. What could be the cause? I feed him brine shrimp, beefheary, bloodworms, and cichlid bio gold pellets. Whenever I see him, the orange is really faded, even hard to see. At my Lfs all the oscars I see have vivid bright orange colors. Is it possible that I got one with just bad genetics?