Which risk increases when a saltwater fish inhabiting a hypertonic environment develops kidney failure?

💡 Explanation

When kidney failure occurs in saltwater fish, impaired osmoregulation due to the damaged nephrons prevents excess salt excretion, further increasing the internal solute concentration and drawing water out of cells by osmosis. Therefore, cellular dehydration results, rather than ammonia accumulation, chloride secretion, or mucus production which are processes dependent on other organ systems.

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