yes
Then your fish will eventuatley die but if you put too mush of it in your fish will explode :)
not too many because they wont be enough space for it to roam
there would be too many fish in the sea way too many so sharks are important to keep the fish population down if they did not exist there would be too many fish
I never move my fish! Fish can die when they are moved as this stresses them. When you clean them even refrain from moving them, empty half the tank with a jug or cup and then fill the rest of the tank with treated tank water.
Gold is an inert metal (not dangerous to fish). You can put it into a fish tank if you choose too.
There are many reasons one would need desalination services. If one has a fish tank or aquarium with freshwater fish the fish can die if there is too much salt and would need to have the salt removed.
Possibly the aquarium is too small for him/her and it is trying too escape the confines of the tank.
No. There is not such thing as too much oxygen just too much carbon. It is good to have a lot of oxygen so the fish dont die because of no oxygen.
Make sure that the filter bag that is in your filter is clean. The cause can also b too many fish or over feeding.
so they do not get too hot and die or look at the sun and go blind.
No.
Yes. When fish food(ex. tropical flake) sits for too long, it turns into ammonia, a very poisonous substance for fish.(and everything else too!) To prevent your fish from dying from ammonia, clean your tank about every 2 months.