It sounds like the glass fish you gave Dr. T holds symbolic significance for you. representing your connection and the therapeutic relationship itself. The prospect of it not finding a place in his new office may trigger feelings of rejection or a sense of loss.
Dr. T's response, while perhaps unintentionally dismissive or matter-of-fact, could be about his own boundaries and priorities. the office often serves as a transitional space for both. Dr. T's focus on logistical considerations like space constraints may reflect his need to establish a professional environment, even if it comes at the expense of some emotional resonance for you.
Your desire for acknowledgment and validation from Dr. T regarding the significance of the glass fish suggests a longing for affirmation and recognition of your contributions to the therapeutic process.