That's what's called a "literary device": a single individual is used as a microcosm for the whole. The story is about "Amelia" where "Amelia" represents all bl

That's what's called a "literary device": a single individual is used as a microcosm for the whole. The story is about "Amelia" where "Amelia" represents all bluefin tuna. In that sense, the story is about Amelia. It's something that might not be clear to people for whom English is not their first language, but it's pretty common in literature.