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About 90% of the World's Large Fish Have Disappeared in the Last Half Century

Feb 10, 2026 February 10, 2026 1 min read 📰 VOA Persian
📋 Key Takeaway

A study reveals that 90% of large fish in the oceans have vanished in the past 50 years due to overfishing. The research highlights the risk of extinction for several species, including tuna and cod. This issue has significant implications for marine ecosystems globally.

🔍 Quick Context Guide
💡 Bottom Line: The dramatic decline of large fish populations poses serious ecological and economic risks that require urgent global attention.

👥 Key Players

Boris Worm MENTIONED
Co-author of the study
"His research highlights critical environmental issues that could impact fisheries and marine biodiversity, which are relevant to Iran's fishing industry."
Canadian Scientists MENTIONED
Conductors of the research study
"They provide crucial data on global fish populations, influencing international fishing regulations and conservation efforts."

📰 What Happened

A study reveals that 90% of large fish in the world's oceans have disappeared over the last 50 years due to overfishing. The study identifies several species at risk of extinction, including tuna and cod, and discusses the unknown consequences for marine ecosystems.

  • The study will be published in the journal 'Nature'.
  • Species such as tuna, cod, and halibut are highlighted as being at risk of extinction.

💡 Why It Matters

🇮🇷 For Iran: Iran's fishing industry could face significant challenges due to declining fish populations, impacting food security and economic stability.
🌍 Regional: The decline in fish stocks may lead to increased competition among regional countries for dwindling resources, potentially escalating tensions.
🌐 International: Globally, this study could prompt stronger international regulations on fishing practices and conservation efforts to protect marine biodiversity.

📚 Background

Overfishing has been a critical issue affecting marine ecosystems worldwide, leading to significant declines in fish populations and threatening biodiversity.

Overfishing Marine conservation
📡 Source: NEUTRAL
📊 Confidence: 70%
The study is published in a reputable scientific journal, which suggests a level of credibility and peer-reviewed research.

A research study by Canadian scientists indicates that 90% of the large fish in the world's oceans have disappeared in the last half century due to overfishing. This study, which is set to be published on Thursday in the journal 'Nature', mentions species at risk of extinction, including tuna, cod, and halibut, with some of these species completely gone. One of the authors of the 'Nature' report, Boris Worm, states that the disappearance of large fish affects the ocean's ecosystem and its consequences are unknown worldwide.

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Translated from the original and edited for English readers. View original source →

Translation confidence: 85%

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