Which risk increases when a bony fish migrates rapidly between fresh, saltwater regions?

💡 Explanation

When fish quickly move between varying salinities, rapid uptake changes occur; because the fish fills swim bladder by absorbing gas from its blood that secretion gets disrupted causing pressure imbalance in said bladder leading likely to rapture during rapid freshwater to saltwater migration. Therefore, rupture risk increases which alternative failure modes needing slower more graduated adaption.

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