leafy sea dragon

my second attempt at shooting these little guys.

I've seen these guys in La Jolla (outside San Diego) and they never cease to amaze me. Good job on the aquarium shot. Reflections, lighting and people always seem to get in the way. I suppose if I had to nit pick it would be to say including the entire tail would be ideal and if that is the entire tail to provide a little more space between it and the nose. The tight crop is nice, but a little more room around the edges wouldn't hurt.

poor image quality

any suggestions for optimimum ISO and shutterspeed for these guys? The lighting in this room is always dimmer than the other exhibits.