Always loved angels - couldn't wait to get a tank big enough for them. They don't seem to be aggressive at the moment - the only thing I have noticed is that they sometimes follow the smaller fish around and look like they are ready to eat them if they get a chance
Nikki - not doing anything special to get the pics. I usually take the pics when they are waiting to be fed so that they congregate in the area of the tank where the food comes in. Then take the pic from an angle to the glass at the maximum resolution of the camera. Don't try and focus in too closely on the fish - keep it a wide shot as this gives a better depth of field. Once you have the wide shot you can then crop it down to the bits you want. Also remember that when taking fish photos there is a ratio of about 40 naff pics to 1 decent pic Besides, you have posted some great photos on the forum in the past, so I think you know what you're doing.....