@drill. I think, Beijing Zoo's Aquarium Building should be bigger than the Aquarium building at Henry Doorly Zoo.
Naples Aquarium, opened in 1874, closed in 2015-but maybe it will be reopend somedays.... or Blackpool Tower Aquarium, opened in 1875, closed 2010. But as I mentioned above, both were not"first in the chain". But they were the two oldest aquariums closed recently. Next in line is the Washington Aquarium, opened in 1878, closed in 2013.
I try to make it easy-which Aquarium has bred sucessfully Nautilus as the first aquarium in the world ?