Which limitation arises when saltwater fish move to freshwater habitats lacking sufficient chloride cells?

💡 Explanation

When saltwater fish are in freshwater, passive diffusion causes water influx and ion efflux through gills because freshwater has lower osmotic pressure. This leads to osmotic imbalance if the chloride cells cannot actively pump ions in. Therefore diffusion driven osmotic imbalance results, rather than buoyancy, hypoxia or susceptibility, due to lack of active ion regulation .

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