What is the meaning of the old pond fish

Pool fish, the old abyss from the poem: pool fish think of the old abyss, refers to the pool fish look forward to the abyss where they used to live, a metaphor for their nostalgia for their old homes, although the previous life although the conditions are more difficult, but it was a very free world, because of the love of a partner, you can be together every day to live a happy life.

Metaphor for love is now bound, the desire to have freedom, hope to pursue the love they want, but also contains a good life in the past the feelings of longing, describing the very miss once that he (she), the two people who loved each other in the past separated, they are now living unhappy, revealing the past love can not be together the helplessness.