The Goldfish (1924)

Jennie Wetherby and her song-plugging husband, Jimmy, agree that if either ever tires of wedded life, the presentation of a bowl of goldfish to the other will signify the end of their relationship. After Count Nevski convinces Jennie that she could be a great lady if she would choose the right husbands, the Wetherbys quarrel and Jimmy gets the goldfish. Jennie successfully climbs the social ladder by marrying Herman Krauss, then J. Hamilton Powers; and she is about to announce her engagement to the Duke of Middlesex when Jimmy achieves success. Their old love wins out, they are reunited with Krauss's help, and the Duke gets the goldfish.