Which outcome occurs regarding buoyancy when a fish's damaged swim bladder cannot properly secrete gas?

💡 Explanation

When a swim bladder cannot secrete gas (oxygen, carbon dioxide), the fish cannot control the volume and hence density via hydrostatic equilibrium, because gas secretion is how neutral buoyancy is achieved, leading to the inability to stay at specific depths. Therefore the fish struggles to maintain vertical position, rather than sinking, rising, or maneuvering, all of which require a controlled swim bladder volume.

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