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Adrián Levy

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A German fisherman released thousands of baby catfish into a river in 1974: 50 years later, they rule the waters

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By Adrian Levy, Adrián Levy, David Nelson
| Diario AS Verified
In 1974, German biologist and recreational fisherman Roland Lorkowsky released thousands of juvenile Wels catfish (Silurus glanis) into Spain’s Mequinenza Reservoir on the Ebro River. His goal was simple: create a world-class sport fishery by introducing one of Europe’s biggest freshwater fish. Few could have predicted the long-term consequences. Today, the Wels catfish has become one of the dominant predators in many Spanish waterways.
Open in Who Shared Issue with article?

In 1974, a German fisherman released thousands of baby catfish into a river: 50 years later, they rule the waters

|
By Adrian Levy, Adrián Levy, David Nelson
| Diario AS Verified
In 1974, German biologist and recreational fisherman Roland Lorkowsky released thousands of juvenile Wels catfish (Silurus glanis) into Spain’s Mequinenza Reservoir on the Ebro River. His goal was simple: create a world-class sport fishery by introducing one of Europe’s biggest freshwater fish. Few could have predicted the long-term consequences. Today, the Wels catfish has become one of the dominant predators in many Spanish waterways.
Open in Who Shared Issue with article?

In 1974, a German fisherman released thousands of baby catfish into a river; 50 years later, they rule the waters

|
By Adrian Levy, Adrián Levy, David Nelson
| Diario AS Verified
Exactly 50 years ago, in 1974, German biologist and recreational fisherman Roland Lorkowsky released thousands of juvenile Wels catfish (Silurus glanis) into Spain’s Mequinenza Reservoir on the Ebro River. His goal was simple: create a world-class sport fishery by introducing one of Europe’s biggest freshwater fish. Few could have predicted the long-term consequences. Today, the Wels catfish has become one of the dominant predators in many Spanish waterways.
Open in Who Shared Issue with article?
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