if your betta fish doesnt go up for air its probably dead.
Most likely because they are dead or are scared of someyhing above.
i have mollies and to of them stays on the bottom they are alive but they they stay pretty much in thesame place
they might be bottom feeders
Goldfish have central mouths. They are not bottom feeders or top dwellers. This means they should stay at the center of the tank. It also may mean that your fish are sick, or they could just be scavenging for food in the gravel.
Tropical fish stay at the bottom corner of the tank because they are either cramped up, if the tank is small or the fish species is just like that
they just settle at the bottom of fish tank
Because there is more oxygen at the bottom of the tank. Not for our type of lungs but theirs
If your fish food is staying afloat for a week it is most likely because it is just buoyant and you have overfed your fish. Feeding your fish less will reduce fish food staying afloat as well as help keep your fish and tank healthy.
I suggest that you learn more about your fish in your aquarium. One of your fish might be a bottom sucker which means that they eat all of the dirt on the side or bottom of your tank. If one of your fish are bottom suckers, that's probably the reason why your aquarium is clean. If none of your fish are bottom suckers, than somebody must be secretly cleaning your tank for you.
You should probably transfer it in a cup or trap it. ;)
Betta fish forage for food at the bottom of there tank if there hungry and if there is food in there because they eat non stop.
That fish has ceased to exist. It is an ex-fish.
Fish eggs, fish sperm, mold.
if the gold fish is staying a the bottom of the tank and not coming up to eat look around do you have it under a lamp or brite light is the top of the water dirty if so take the light by moving it to a stop a bit more shady and change the water. good luck
You simply take any fish and drag it to the bottom of the tank and then drag it up (fastly) and it will go soaring!
ummm your fish is dead....sorry.......
Could be anywhere.
for decoration use.