Mermaid

 Main character: the boy 

I really feel the same ambience as 1984 where the government censors people's mind and restrict creative thinking.I thought that the fish(mermaid) symbolizes the boy's thought and the sea as the freedom. As the boy took the fish home and put it in the tank(restricting from freedom) he got arrested and tortured to regulate his thoughts(I guess it is linked).

In the end, the boy got fins and swam in the sea with the mermaid.This shows how boy got free from the censorship and killed himself by drowning.