Pierre Teilhard de Chardin was a French philosopher and Jesuit priest who integrated science, theology, and philosophy in his works. He proposed the concept of the Omega Point, an evolutionary endpoint where consciousness and matter converge in a final unity. Given his philosophical perspective, it is possible to speculate on how he might have interpreted the scenario you described.
Based on Teilhard's ideas, he might have seen the glowing colors of the fish's scales as a manifestation of the interconnectedness and evolutionary significance of life. Teilhard emphasized the notion of a spiritual dimension in the evolutionary process, suggesting that matter and consciousness are intimately linked. The glowing colors in the fish's scales, representing the visible spectrum, could be seen as an expression of the vibrancy and diversity of life, reflecting the underlying unity and connectedness of all living beings.
Teilhard might have interpreted this event as a symbolic representation of the inherent beauty and sacredness of life, highlighting the idea that even in death, life continues to radiate its essence. He might have viewed it as a glimpse into the deeper spiritual dimensions of existence, reflecting the ongoing process of evolution and the movement towards the Omega Point.
However, it's important to note that Teilhard's views were complex and nuanced, and this interpretation is speculative. To gain a more accurate understanding of his specific thoughts on such a scenario, it would be best to refer to his writings directly or consult experts who have extensively studied his philosophy.