Gail
It was a soppy, overly romantic gesture on Danny's part, but C.J. didn't mind, even though he had thought that "goldfish" was to be taken literally. And, to tell the truth, she was rather touched that he had gone to so much trouble.
The fish was named Gail – a rather unconventional name for a goldfish, but Danny said that was the goldfish's name. She'd Googled the name and discovered that it was short for Abigail, which meant "my father is joy". She thought that it was rather ironic that her fish had the diminutive of the First Lady's name.
Perhaps because of that fact, she began talking to Gail, as she talked to Abbey. Even though Abbey was the First Lady, she had always been friendly to C.J., and she considered Abbey to be a friend – one of her best friends, in fact. So perhaps it was Gail's name that made C.J. confide in her. At times, she thought she was crazy – talking to a fish! honestly! – but she let it slide. After all, the fish couldn't leak things to the press, and she never had to worry about Gail arguing with her.
So Danny's unconventional present was a good thing after all.