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Good Reads  Marine & Freshwater Biology  Fishes  Bony Fishes

Chasing Giants In Search of the World's Largest Freshwater Fish

Out of Print
By: Zeb Hogan(Author), Stefan Lovgren(Author)
250 pages, 18 illustrations
Chasing Giants
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  • Chasing Giants ISBN: 9781647790578 Hardback Mar 2023 Out of Print #260420
About this book Contents Biography Related titles

About this book

On May 1, 2005, a Thai fisherman caught a truly monstrous Mekong giant catfish. At 646 pounds, it captured the world's attention, and with awe and wonder, it was deemed the largest freshwater fish on record. There was no denying its size, but when biologist and research associate professor Hogan saw a photo of the fish, he wondered if it really was the biggest in the world. To his surprise, no one had systematically sought to answer the question: Which of the giant freshwater species really was the largest?

Seeking to answer that question has brought Hogan face to face with massive arapaima and piranha in the Amazon, alligator gar in Texas, pigeon-eating wels catfish in France, stingrays in Cambodia, and the gnarled-toothed sawfish in Australia. Part of his scientific adventure has been captured on Monster Fish, and Hogan now tells the full story of his 25-year quest to understand the mysteries of some of the oldest, largest, most bizarre creatures on Earth.

The fate of these giant fish motivates Hogan to understand the various species he studies. The megafish's numbers are dwindling, and the majority of them face extinction. In this book, he teams up with award-winning journalist Stefan Lovgren to tell, for the first time, the remarkable and troubling story of the world's largest freshwater fish. It is a story that stretches across the globe, chronicling a race against the clock to find and protect these ancient leviathans before they disappear forever.

Chasing Giants: In Search of the World's Largest Freshwater Fish combines science, adventure, and wonder to provide insights into the key role the massive fish of our lakes and rivers play in our past, present, and future.


Prologue. Truly a Whopper
Chapter 1. The Megafishes Project
Chapter 2. Contenders and Pretenders
Chapter 3. Old Fish, Ancient Origin
Chapter 4. A River Runs Short
Chapter 5. Monsters?
Chapter 6. The Age of Loneliness
Chapter 7. Under Father Sky
Chapter 8. Close Calls with the God of Darkness
Chapter 9. Blue Heart of Europe
Chapter 10. Message in a Bottle
Epilogue. A Wonder of the Mekong

About the Authors

Customer Reviews


Zeb Hogan, PhD, is a research biologist at the University of Nevada, Reno and the United Nations Convention on Migratory Species Scientific Councilor for Fish. Hogan hosts National Geographic’s television series Monster Fish and his research focuses on migratory fish ecology, fisheries management, and endangered species issues.

Stefan Lovgren is an award-winning journalist and filmmaker with more than 25 years of worldwide reporting experience. He has been a regular contributor to National Geographic’s numerous media platforms since 2003 and writes about a wide variety of environmental issues with a focus on fish and freshwater subjects.

Out of Print
By: Zeb Hogan(Author), Stefan Lovgren(Author)
250 pages, 18 illustrations
Media reviews

"[...] amid accounts of wrangling piranhas in Brazil and sawfish in Australia, Hogan and his co-author, journalist Stefan Lovgren, describe the environmental pressures endangering these targets. The final reveal is a satisfying conclusion [...]"
Scientific American

"Recommended for those interested in ecology and environmental issues, anglers and those who love fish, and those who are interested in what science research can look like around the world."
– Bryanna Plog, Travels. Books. Explorations.

"The scientific material is accurate, admirable, and VERY thorough. The writing is EXCELLENT, and the authors succeed WITHOUT DOUBT in their goal of 'connecting science and adventure to reach millions of people.'"
– Gene S. Helfman, emeritus professor of the Odum School of Ecology at the University of Georgia, author of Fish Conservation: A Guide to Understanding and Restoring Global Aquatic Biodiversity and Fishery Resources

"I have read a lot of fisheries, ecosystem management and conservation manuscripts and papers in the last 40 years, none of which captured my attention as did this work by Zeb Hogan and Stefan Lovgren. The pure fisheries issues alone make this a stellar book, but with the additions of the local cultural anecdotes and the personal insights provided, it becomes a truly significant contribution to world fisheries and ecosystem degradation understanding."
– John W. Sigler, conservation ecologist and senior author, Fishes of Idaho: A Natural History Survey

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