Give it/them good, clean water (including regular water changes), plenty of space (allow 1 gal+ per inch of fish) and give them a good varied diet including earthworms.
Your goldfish will not live "longer" no matter how many or how few you have.
I believe that they do because their gills take in oxygen and the filter would help generate the oxygen.
No bettas live for 2 years. goldfish live for long as 25 yaers if conditions are clean.
well it just depends how old it is
No, but it helps them live longer and healthier.
fresh water
A little less longer than regular goldfish.
=yes it will help you live longer=
They don't have to have one but it's better for them and they will live longer if you do.
goldfish do not live on land
yes he live plants will help produce oxygen. over fake plants
Eating breakfast can't help you live longer; living healthy can.