If you put a sealed fish tank full of fish into zero gravity would the fish notice?
462519
probably not lol...although it might wonder why everything else around the tank is floatin lol....probably be a bit trippy lol
864563
In part, specific gravity can be measured with a hydrometer.  You establish a range that the liquid displaces and let it bob until it comes to equalibrium.  This test can be measured at any temperature.  \n\nHowever, mass density is done in a container that is kept at a constant temprature.  The math is easy once the measurments are taken, but there is more time involved in setting up the test and bringing the whole thing to equalibrum
1169302
Yes, gravity exists near anything that has mass.  If you remove the air from a container, what's inside won't float.
1062365
no, because fish have gills (breathe on the outside) unlike us we have lungs in the inside.  In my aquarium tank I have a small mouth Bass & Yellow Perch, when i feed my bass minnows he would have three minnows in it's mouth (minnows literally sticking out it's mouth)/ my perch as well.  They will swim around with half a minnow sticking out it's mouth and act like it's no big deal.  You will see this with bluegill they will take the worm and swim around with it hanging out it's mouth.  I just feed my fish (thanks for reminding me) and I took pictures so if you want to see them just e-mail and I'll send it to you.  \n-About the dead smaller fish stuck in it's throat some fish I catch may puke up fish due to exhaustion.  When i go fishing for walleyes and northern pike I've had them cough up fish on me.  I've had bass do the same.  \n-Death? He could have died due to foul hooking (not meaning snagging) but if it hook in the middle or back of the throat can kill any fish especially if it's kept out of the water to long, just cut the line and release.  It doesn't work out all the time.
347841
The astronauts would be in zero-G for almost the entire trip causing the negative effects of weighlessness on their bodies.\n\nThe accereration of the spacecraft would indeed negate the problems with Zero-G by temporarily creating artifical gravity.  The problem lies in the fact that with the limited amount of fuel on the spacecraft, acceleration would only occur while the the engine was on. (a very short time with a chemical rocket)   \n\nOne solution would be to use a a drive that will burn during the entire trip.  One such drive is an ion drive (used on the recent Deep-Space One spacecraft to visit a local asteriod).  This drive would acclerate for most of the trip there creating a small amount of artifical gravity.
580603
stick it in a tank of water then measure the water displaced.archemedes law
370609
they react to the situation but dont feel it like mammals do.ask a fisherman they say the fish cant feel the hook but they do react to it
86909
A difficult question.\nThe two references below have something to say about whether or not fish feel pain. The arguement claiming 'Yes' is related to the evolution of survival behaviours and hard to refute. It does however hold true for any animal which responds negatively to stimuli.\nIt is certainly true that if you stick a pin into a maggot it will wriggle - it certainly does not like it. Fish are none too keen either.
713171
No the molecules still weigh the same. With water the volume will increase, that's why ice floats. Most other substances decrease as they freeze.
1101435
Smell, or olfaction, as scientists call it, is an important sense for many fish. Those little holes that look like nostrils are called nares. Nares don't lead to the throat the way nostrils do in mammals, but open up into a chamber lined with sensory      pads. Not all fish move water in and out through these nares in quite the same ways, but key to a strong sense of smell for fish is the ability to move water rapidly over these sensory pads. Some fish can pick up chemical signals when immobile by      pumping water through their olfactory system via tiny hairs called cilia. Other fish can pump water by a muscular movement. Some fish, such as smaller species of mackerel, have an olfactory system that requires them to swim in order to get water      moving through their nares. When the sensory pads pick up chemical signals, they transmit them to the fish's forebrain, which interprets the signal and incites the fish to respond appropriately.
878042
As the temperature of a liquid increases, the less gas it can hold dissolved. If you set a cold glass of water on the counter, it contains dissolved air. That is what th fish breath, dissolved air. As it warms less air can stay dissolved, so it comes out of solution on the side of the glass.\n\nIt is not the H or O from H2O
1013802
i have a fridge in the garage for beer and bait, my extra minnows seldom die in there..i may put a little fish food in the bucket and they're good to go when i go fishing the next time.
44588
My understanding is that air has mass - more pressure in a chamber would mean more air - therefore, moving mass (or pressure) from one portion of the sealed vessel to another would shift the mass, be it ever so slightly. This would not affect the bouancy of the vessel, but may change its orientation ever so slightly. Anogulous to being in a boat and moving from the front to the back - the back would drop slightly, and front would raise slightly. \n\nHowever, as stated, the buoyancy of the "entire" vessel would not be affected.
784253
Does density affect  items when temperature, humidity, and  gravity are changed?
1047703
Fish don't hold thier breath
82203
Fish can often be seen gulping air from the surface during heat waves when oxygen in the water is depleted, other fish eat from the surface
814698
I suppose if you took a fresh water fish and put him in the ocean, he wouldn't be able to deal with the salinity and would dehydrate - essentially die of thirst!!