Final answer:
The 'wish fish' appears to be a symbolic element from a narrative or piece of art that visualizes Beatrix's wishes or desires. Without specific context, it's not possible to provide a factual answer.
Step-by-step explanation:
The question seems to reference a narrative or artistic metaphor rather than a factual incident, so it is important to clarify that without the context of a specific story or artwork, providing a definitive answer is a challenge.
However, based on the references provided, the wish fish could be a symbolic representation that caters to the imaginative or fantastical elements within a story or a piece of art. It is a reflection of desires and wishes – a thematic element common in literature and iconography.
For Beatrix's wish to be shown by the wish fish, it would imply a visualization of her inner desires or a narrative plot device to advance the story, typically found in creative expressions like fiction or visual arts.