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Maroc Maroc - MYJOYONLINE.COM - A la Une - 24/Mar 13:51

KNUST research reveals key catfish breathing insights to boost farming

A new study by researchers at the Kwame Nkrumah University of Science and Technology has revealed that the African catfish (Clarias gariepinus) can triple its air-breathing rate when exposed to high levels of carbon dioxide in water. The African catfish is a unique fish that possesses the ability to breathe oxygen dissolved in water as well as from the atmosphere. Its air-breathing behaviour is characterised by regular swimming to the air-water interface and directly breathing air. The researchers observed that at 40 mg/L CO₂, the fish significantly increased its breathing frequency compared to normal conditions, showcasing its remarkable adaptability to changing aquatic environments.

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