Number #1 is your best here because of the color. Some of the others it is noticeable it was taken through a tank, but this one looks really great! Nice focusing on the single fish.
Cool.
Sabine has finally posted the best of her photos taken at Hagenbeck's back on 4 August. And the first I have always declared to be the very best of her little series of aquarium fish (many of which had to be taken through very thick glass and the "Nemo" even through the glass of a cylinder-shaped tank, which adds to the distortion, of course. And light was tricky, too.
My own pics from that outing are none as good, I'm afraid. Nothing to write home about, anyway...