depends on the size of the fish, there might not be enough oxigen in a small fish tank.
some reasons for fish dying suddenly can be due to shock caused by loud music or contaminates getting in the water. you should unsure the fish are feed and if you have no filter you must unsure you are cleaning out the tank once a week while doing this check pH levels of water to unsure it neutral not acidic . cleaning out the tank will also unsure there is oxygen in the water.
no! they have sensitive gills and they will die within 24 hours
Leaving a dead goldfish in your tank will boost ammonia levels.. You dont want ammonia in your tank. It rapidly kills fish
The Fish will die.
the fish will DIE!!
yes
No, because they will die!
Not unless you had another fish in there.
the fish mite die, and life in the tank could be reduced
A fish will most likely die if you put a cleaning agent in its fish bowl without removing the fish. You should remove your fish with a net and place it in another safe container until fish bowl is clean.
fish die of oldnesss or not well tanked care before you get a fish make sure you know fats about it and mostly get a tank with a filter. i had with that died now that i have a tank with a filternothing happens
It will either have to get used to it or die.