Thanks for the comments.
And as for capturing Oscars, you need to use a flash, and hence be right up close to the glass and at a very slight angle. Though my Oscars are slow so they are actually easy to take pictures of. It is my africans that I have a pain with. OH and I finally figured out how to get my Discus to look close to real life. I use no flash, and have iso high. (So yah adds grain) but it is a hundred times better... See for yourself. (I still need to find the best balance between iso, but hey this are a lot better than I have been getting.)