Saltwater Fish
July 14th, 2010
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Is there a difference in freshwater fish and saltwater fish?
I am doing a report for school and I was wondering if salt water fish had a different kind of gills to get oxygen from the saltwater. Thanks!
Are their gills different? Do they have different specialized body parts?
How they handle fluid balances is the difference. Some fish, like mollies, can handle water from full fresh to full marine, but they're an exception, most cannot. I forget which way it happens, but if you put one in the other, it will die of dehydration(there's a kick in the head, dying of dehydration while IN water!), go the other way and they'll over hydrate and die from shock. I believe the first one is freshwater fish in saltwater, but I can't remember for certain.
EDIT: Found it.
"Thus the fish are very different. Freshwater fish need to rid the body of excess water and saltwater fish need to rid the body of excess amounts of salt in order to be in harmony with the environment. Saltwater fish need to work harder to maintain harmony within the environment. They are also more susceptible to changes in the chemistry of the water because they have to drink more of it."
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