Which risk increases when a fish rapidly ascends, disrupting its pneumatic duct function?

💡 Explanation

When a fish ascends rapidly, Boyle's law dictates decreasing pressure which causes swim bladder expansion, if the pneumatic duct malfunctions, the swim bladder could overexpand and rupture. Therefore bladder rupture is the risk, rather than reduced oxygen, parasite risk or muscle problems that arise from alternative causes.

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