Which outcome occurs in a euryhaline fish, transiting from salt to fresh water?

💡 Explanation

When euryhaline fish move to freshwater, the reduced external salinity causes a decrease in the activity of chloride cells in the gills, because these cells normally excrete chloride to maintain homeostasis. Therefore osmotic intake increases, rather than increased absorption, elevated mucus, or enhanced salt excretion, which are unsuitable adaptive responses in freshwater.

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