Catch a fish regularly in a river, and it is natural to look nearby for its young. For a long time the European eel frustrated that search. People caught and ate it, watched it remain in one place for years, yet found no evidence of local reproduction. Danish scientist Johannes Schmidt followed larvae instead, comparing their sizes across waters and directing the search for an origin across the Atlantic toward the Sargasso Sea.
Understanding took a long detour: from the eel in a stream to far smaller oceanic larvae, gradually connecting a life. The scientific history in The Book of Eels often has a detective story's attraction. A sentence we can now say casually once cost someone years of inquiry.
But Patrik Svensson is a Swedish cultural journalist, not an ichthyologist. His father first taught him about eels. Fishing together beside a stream, they discussed origins in distant seas. Scientific knowledge alternates with childhood memory: an animal humans keep questioning beside a father a son later tries to understand. The strands join naturally because they began together.
How Far Does a Stream Reach?
A seemingly familiar creature has an unfamiliar life. European eel larvae drift toward European coasts and change form; many enter fresh water to grow before returning to sea when mature. A river encounter shows only one stage of a long journey. Looking solely at that stretch of water cannot easily reveal an origin.
Svensson finds such mismatches in knowledge. Aristotle tried to explain where eels came from; the young Freud investigated reproductive organs before becoming a psychoanalyst. Famous names entertain, but this was not a riddle awaiting a clever guess. Animals migrate and change shape, while observers occupy limited places and times. Conditions of observation are themselves a problem.
Failures consequently do more than prepare triumphs. Not finding something does not establish its absence; an elegant explanation still requires evidence. Schmidt's search mattered because it went beyond supplying a theory for a visible eel. He traveled farther to seek evidence that could test it.
Introducing a book first published in 2019 also requires a later development. A 2022 study tracked adult European eels released in the Azores, obtaining direct evidence of arrival in the presumed Sargasso Sea breeding region. This did not mean witnessing the complete wild reproductive process. It did move beyond inference from larval distribution. Repeating the book's unresolved questions as timeless conclusions would miss the advance.
New knowledge does not diminish the book's interest. It gives earlier work a continuation. Liking the phrase “the eel remains a mystery” so much that we resist solving it would betray those who went looking. The unknown deserves attention because we want to know, not because ignorance is inherently poetic.
That also distinguishes the book from a reference manual. Besides known facts, Svensson asks why people began, how they persisted, and where they failed. Readers need not retain every developmental-stage name to follow. An answer's history can show scientific work more clearly than the answer alone.
Being Together Without Much Speech
The other kind of knowing in the book cannot be completed by enlarging a sample.
Father and son do not always talk much while fishing. Svensson remembers few conversations unrelated to eels, and sometimes no need for words. That might seem insufficient material for intimacy: no profound talk, solemn declaration, or paternal explanation of life. Yet a child knowing they will return together already has a shared life.
Some readers will recognize elders who struggle to ask about feelings but take a child somewhere, teach slowly, and allow prolonged company. A common activity gives each a place without requiring constant emotional explanation. Silence is not thereby superior to speech. Some silences relax us; others make approach impossible. This is one particular relationship, not an instruction that all children should interpret whatever parents leave unsaid.
The book also offers a turn concerning tradition. Fishing initially appears inherited across generations, but Svensson discovers it may have begun with his father. Eva Wissting highlights this in her Asymptote review. What seemed ancient and secure to a son may once have been a parent's new choice.
Family tradition becomes more intimate through that possibility. What children inherit need not descend from distant ancestors. Sometimes the previous generation tried something, liked it, and repeated it. Its later importance may come not from profound founding intentions but from time genuinely spent together.
Why his father first loved eel fishing may have no single answer. Calling it a deliberate educational strategy would be too tidy. Interests have several sources that people cannot always explain themselves. After his father's death, Svensson can revisit memories and reconsider details, but cannot verify every question. Writing preserves the relationship while revealing what was never asked.
This helps explain why some readers favor the paternal memories and others the scientific history. They do not become one unified explanation. Knowing eels can await new instruments and studies; another trip to the stream with his father cannot be obtained through more knowledge. The strands illuminate each other while retaining different regrets.
A Loved Practice Can Also Be Stopped
Father and son were not merely observing at the stream. They were fishing.
Warmth must not conceal that fact. An animal can give someone cherished childhood experiences while being caught, killed, and eaten within those same memories. Some StoryGraph readers object to the tension between admiration and treatment. Such discomfort need not be dismissed as ignorance of rural life. A good evening for father and son need not have been good for the eel.
Svensson does not remain within nostalgia. Asked in a 2020 interview about his family's favorite eel dish, he says he does not eat eel because endangered animals should not be hunted and eaten. The answer adds weight to the childhood account. He values what his father gave him without requiring the practice to continue unchanged.
Remembering and continuing are different acts. Stopping does not first require denying his father's goodness; acknowledging goodness does not make every inherited habit untouchable. A book about home and a parent becomes more convincing by reaching this point than by simply declaring tradition worth preserving.
Avoiding one food is not the whole of conservation. Migration routes, river conditions, and fishing pressure all affect survival. The Environment Agency's account of the 2022 study connects tracking to protection. Knowing where eels travel can help target obstacles. A long history of inquiry meets a practical difficulty: damage does not wait until understanding is complete.
These connected tensions reward slow reading. Remembering a father prompts curiosity about eels; more knowledge may change an inherited habit. Memory is not canceled by discovery, and discovery need not stop to protect memory.
The stream remains, but after the book an animal in its water no longer seems to reveal its whole life. Remembering the person who brought us there, we may find an inheritance beyond a fishing method: an interest in asking farther-reaching questions. That can continue even when we return without tackle.