I have many aquariums in my fishroom. Two of them house lovely adult oscars. They were given to me a year ago by someone who no longer wanted them. The only thing they eat is Cichlid Gold pellets and that really bothers me. I’m the kind of fish keeper who offers a wide variety of food to my fish - I keep various types on hand - live, frozen, freeze dried, flakes, gel, wafers, various pellets, and I even make my own beefheart food for my discus. I’ve tried to expand the Oscars’ their diet by offering fresh or frozen shrimp, freeze dried tubifex cubes, and other bite sized offerings similar to the cichlid gold. No takers. It just rots until I pull it back out. I had an overpopulation of endlers during covid since I cannot take them to my fish club so I dropped a couple In each oscar tank. (I don’t use store bought feeder fish). To my surprise.. the oscars won’t touch them! Now, a month later, I have two more huge communities of endlers happily co-existing with the oscars and I have to feed those tanks two different kinds of food daily to accommodate both inhabitants. Are the endlers just too small for them to bother chasing? Some of the females are pretty big - about the size of a mature tetra and they certainly aren’t faster than the oscars. Why won’t they eat them (or anything else for that matter)?