All together now - DOH!
I agree about the detail, though. I never would have thought to look for the tail muscle rippling before I saw it v1 of the aquarium. Now I miss it. And the specks of debris in the Prolific Goldfish saver really add something to the feeling of realism, though I know we won't get that here. My point is, it's the little details which bring the whole piece to life.