They can't.
You do not have to remove fish to clean a tank, as you should never be cleaning the entire tank; it will remove the good bacteria needed for the health of your fish.
If your tank is over stocked and you are unable to upgrade to something bigger, many local fish stores may be willing to give you store credit for returning some fish.
yes
yes but only a betta fish and moutain minnows can live in a bowl :) oh and they cant live together
As Mollies are tropical fish, they need regulated heat and good filtration. My Mollies have been known to dive.
There are millions of tropical fish in the tropical oceans. But they are all marine fish not freshwater fish. Freshwater tropicals can not live in saltwater.
No. Tropical Fish required warmer water.
Most tropical fish live in the ocean, but some do live in freshwater.
Although it may well be possible to keep one for a short time (1"of fish NEEDS 1 gal of water)I believe it is cruel to keep any fish in a 'fish bowl'. Even a Betta.
A guppie is a tropical fish and should be kept in an aquarium with other tropical fish, a goldfish is kept in a bowl or tank in cold water - the 2 cannot be kept together because of the different in the temperature of the water
No! because tropical fish live in heated water and koi in cold water.
Tropical fish.
Yes they can live in a fish bowl but they will eventually take over the bowl.
parrot fish live in tropical waters