Although Hera didn't notice the expensive fishes, Luke and Rafael were awestruck. Seeing such understated luxury made them question their previous experiences; they realized that their understanding of what the world has to offer was incomplete compared to this refined level of opulence.
They were stunned to see such a valuable collection of rare fish swimming freely in the lake. Each fish was worth tens of thousands, yet Hera appeared completely unaware of their worth as she happily fed them. Luke and Rafael sweated a bit, worried that Hera might overfeed the fish and inadvertently incur a hefty damage compensation.