What do you think the white fish Ruby got for the pond symbolizes to her?

Ruby's brother-in-law built a pond in the backyard of their house. When he was buying the fish he let Ruby pick out one fish to be hers. Ruby picked out a white fish and her brother-in-law made sure not to pick any more white ones. I think that this fish kind of symbolized her. For the Winter all of the fish went down to the bottom of the pond to hide. Ruby thought of this as her because the fish was hiding when her life was turning out to be very difficult. Then, when it became warm again the fish came back up. She then thought this was like her because when it came up her life was getting back to normal and she was finally adjusting to it.