Combo ticket for adler planetarium sheddaquarium you can visit each attraction on a different day shedd aquarium buy your tickets now and skip the long lines shedd aquarium formally the john g shedd aquarium contains over 25 000 fish and was for some time the largest indoor aquarium in the world with 5 000 000 us gallonsof water the shedd aquarium which opened on may 30 1930 was the first inland aquarium with a permanent saltwater fish collection located on the shores of la