May I use one of your photos as a reference for a drawing? I have nothing specific planned, and may indeed not end up using any, but I feel I should ask and see what your opinion is before letting the idea run free in the first place. The colors on this one really caught my eye, though.
Oh, they are so beautiful! Your friend was lucky! I did also once have a male who started eating store bought food after a short period, but I think he was unusual. My others (I used to have 7 aquariums before I moved) only would pick small creatures from the rocks in the tank, or eat live food that I cultured at home for them.