Answer:
According to the story.
the details that reveal their conflict are that there is no such relationship because Sergei is the only one that values the fish as a friend, while the fish doesn't do the same with him
Their relationship can't be called a friendship because the goldfish doesn't want to stay with Sergei and Sergei can't land another relationship with someone else to value it as a sane relationship.
Step-by-step explanation:
All right, first of all, this story captures the science of a dependent relationship. Because first of all, Sergei can't land relationships with someone else making it impossible to be able to build a real friendship. Second, the fish wants to leave and doesn't want to stay to help Sergei with his problems. So, it is not a friendship.