Yes, you can eat oscar fish, but there are some things you should know first. For one, they are a bit bony, so you’ll want to remove the large scales and cook them properly. Secondly, their flesh is rather oily, so you may want to consider removing the skin before cooking. Lastly, they are quite high in mercury, so you’ll want to limit your consumption.
That said, oscar fish can be a delicious and nutritious addition to your diet. They are a good source of protein and omega-3 fatty acids, and can be cooked in a variety of ways. So go ahead and give them a try, just be sure to do your research first!