Do they need fresh water too? I mean fish in the ocean.
2007-01-15 18:03:42 · 9 answers · asked by Batch Master McGee 1 in Pets ➔ Fish
no their fish they do get hungry
2007-01-16 00:42:14 · answer #1 · answered by gaffingpoints 3 · 2⤊ 0⤋
If an ocean fish had a disease that compromised its ability to remove salt from its system, yes, it would become dehydrated, because osmosis would result in water leaving the fish's body (the sea has higher than physiological salt concentration). Saltwater fish must "pump" salt ions out of their cells (making the water inside fresher than outside, but it's still a salt solution). Freshwater fish must prevent excess water from entering their cells, as it tends to by osmosis, so as long as they are in fresh water they could never get "dehydrated" - they'd tend to become overhydrated if they got really sick and couldn't maintain their osmotic balance.
2007-01-15 18:17:40 · answer #2 · answered by zilmag 7 · 0⤊ 0⤋
Well, ocean fish drink a lot of ocean water, and expell the excess salt in their urine. So, yes, they do drink freshwater, but they take in saltwater and expell the salt to get this freshwater. If they were kept in freshwater, they would die, of course, because they would drink so much water and, not being able to expell the salt, they would bloat.
Marine mammals, on the other hand, get most of their hydration from the foods they eat, and do not really drink the ocean water.
2007-01-16 04:22:20 · answer #3 · answered by Zoe 6 · 0⤊ 0⤋
Seawater has an more advantageous salt concentration than the physique fluids of fish. for this reason, fish in saltwater continually lose to the sea. those fish would desire to drink continually, urinate little or no, and push the salt out via their gills. Freshwater has a decrease salt concentration than the physique fluids of fish. Fish residing in freshwater never drink. Freshwater has a tendency to circulate their bodies. If freshwater fish drank even a sprint, they could swell up.
2016-10-20 06:55:25 · answer #4 · answered by ? 4 · 0⤊ 0⤋
No. They do not need fresh water. It is harmful for most of them to be in water that does not contain about as much minerals (e. g. salt ) as ther own blood.
2007-01-15 18:09:36 · answer #5 · answered by Yttl 6 · 0⤊ 0⤋
No, because they are adapted to the sea water. Putting them in freshwater would kill them.
2007-01-15 18:06:14 · answer #6 · answered by gravytrain036 5 · 0⤊ 0⤋
No, but they can experience lack of O2.
2007-01-15 18:06:24 · answer #7 · answered by Anonymous · 0⤊ 0⤋
I'd say no.
2007-01-15 18:07:02 · answer #8 · answered by Anonymous · 0⤊ 0⤋
apparantly not
2007-01-15 18:05:58 · answer #9 · answered by Realdeal 2 · 0⤊ 0⤋