Does anyone have experience with this combination? I kept a red ear before for several years but I dont know how turtles do with fish. Musk's seems pretty small, and the oscar fairly large, thus the turt will probably not consider it food.. ...or is it? 
Also, I've read that the musk they secrete smells pretty bad - does this efect the water in a way which might damage the fish?

Also, I've read that the musk they secrete smells pretty bad - does this efect the water in a way which might damage the fish?