Answer:
The anthropomorphism in this story leaves the tone of the narrative amusing, despite a tense moment that is happening.
Step-by-step explanation:
The dialogue between the goldfish and Sergei happens when Sergei accidentally kills Yoni.
The narrated scene is tense and heavy, as Yoni collapses on the floor, amid a pool of blood after being hit on the head. However, the anthropomorphism presented by the goldfish in this scene, allows a certain relief in the story and leaves the moment with a slightly amusing tone. That's because the fish shows sarcastic thoughts and speeches, which promotes a comical and funny relief to such a serious moment.