Stripped bass are anadromous fish, meaning they spend certain parts of their life cycle in fresh water and other parts in brackish and salt water. They are born in freshwater rivers and streams and then migrate to the ocean where they spend most of their lives. They return to fresh water to spawn.
Their physiology has evolved in such a way that they are able to tolerate a wide range of salinity. Like freshwater fish, they have some characteristics that help them retain salt in their bodies, such as unique kidney functions. Freshwater fish adapted to excrete dilute urine, whereas saltwater fish produce small volumes of highly saline urine. Anadromous fish also have gills that both absorb salt in fresh water and execrete salt in seawater.
A unique composition of these evolved traits allows anadromous fish like the stripped bass to survive in both fresh and saltwater habitats.
Pardon the spelling error. Should be “striped” bass, not “stripped”.
Fish that can tolerate a wide range of salinity at some phase in their life-cycle are called euryhaline species. These fish include – salmon, eels, red drum, striped bass and flounder.
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