If the hamster tank was originally meant for fish, then this should be fine provided it is cleaned very well and allowed to run with filter going (without fish) for awhile. Also, as long as there are no cracks, this should be fine. Be sure to use a top made for fish tanks to lock in heat and properly hold a light fixture.
If tank was made for small animals, chances are it will not be able to hold water properly and may break easily once water, ornaments and other accessories are added to it.
Yes, it is okay to keep a dwarf hamster in a cleaned out fish tank as long as it meets their needs. Ensure ventilation, bedding, and hideouts are provided, as well as a suitable wheel and toys for enrichment. Make sure the tank is large enough and has a secure lid to prevent escapes.
So long as you've thoroughly cleaned the tank between occupants, there should be no problem.
Some fish may die of stress of shipping. In another case, one fish may be the dominant one in a tank. So, if you put a larger fish to the tank, the "dominant" one will picture it as a threat and attack it until it is out of the way or is dead. Another reason is that if the aquarium is newly setup, or has been cleaned too thoroughly, you will be in the middle of an ammonia or nitrite spike, which will kill the fish quite quickly. If your tank has been negelected, or not cleaned regularily, you could also have high nitrates, causing death of the newly introduced fish, even if the old fish are ok.
no chances are this is not what killed them, it is much more likely to be that she over fed them. fish in a tank should only be fed every other day and should be cleaned out once a week by removing 25% of the tank water.
There is nothing in fish that is hazardous to hamsters, but it is unlikely that it will eat the fish.
yes
The Fish will die.
the fish will DIE!!
No, because they will die!
Yes. The hamster's should be separated, the cage should be cleaned completely, and the hamster should receive immediate medical attention or else it may die.
Not unless you had another fish in there.
the fish mite die, and life in the tank could be reduced