Yes it can.
Yes. But if the tank has no water, the fish is probably dead and there would be little reason for the bee to waste a sting. So yes, it can; but no it won't.
no - never buy a fish from a tank with a dead one in
Yes.That happend to me a few days ago, one fish died, and then all of the others died except one.:(
Any kind of dead leaf rotting in the tank will poison the water and kill the fish. Maple leaves do not belong in a fishes water.
Fred was a fish and his tank broke.
Obviously it is best to remove and isolate a fish as soon as you see it is sick if it is the only sick one. Sometimes you will also need to euthanase it. There are a couple of reasons. While it is in the tank it may contaminate others. It is easier and cheaper to treat the water in a smaller tank. It is easier to observe and net a sick fish if it is in a smaller tank.
A basic rule is never to buy a fish from a tank that is suspect or dirty. Buying from a tank with dead fish in is a definite no no. I would not even consider buying anything from a pet shop if they had dead fish in aquariums on display.
Not necessarily. If it is sleeping, you can look close and see its gills moving. When a fish sleeps, it also waves its fins just a little. You will also see its mouth opening every once in a while. If you think your fish is dead, DO NOT tap the glass or try to touch it. This will disturb and maybe kill the other fish and the sleeping fish (if it is alive). Just observe the "dead" fish for a couple of hours. If it doesn't move even its gills, go ahead and see what happens if you attempt to remove it with your fish net. If it doesn't do anything you can assume it's dead. Flush or bury it. Do not let it sit in the fish tank once you've found it is dead. It may contaminate the other fish.
Dead or dying
if you can live with the smell
If your fish died of a disease or illness of some sort, it could be contagious and therefore spread to all the other fish in your tank. Best to take it out and dispose of it.
Salt Water Fish