What issues does Elizabeth Bishop's poem "The Fish" raise?

The poem about
the fish takes the reader on a journey through three different states. The poet starts readers
from a point of pity and gradually elevates them to a feeling of admiration and finally to
respect.

The writer introduces the fish as a prisoner. The fish does not
fight, and its age shows through its skin, which resembles ancient wallpaper. The reader, in
this case, is made to feel sorry for the fish given its appearance. After describing the
physical state of the fish, the writer shifts to admiring the fish, which carries evidence of
previous attempts on its life by fishermen. The hooks in its mouth are displayed as medals or
battle scars. Finally, the writer releases the fish back into the sea.

This...