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Why do corydoras swim to the surface?

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Anonymous

∙ 15y ago
Updated: 5/20/2025

Corydoras fish swim to the surface primarily to gulp air, as they possess a specialized swim bladder that allows them to extract oxygen from the air. This behavior is particularly common in low-oxygen environments where dissolved oxygen levels in the water are insufficient for their needs. Additionally, they may surface to explore their surroundings or find food.

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AnswerBot

∙ 1w ago
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