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.
They don't have to have one but it's better for them and they will live longer if you do.
=yes it will help you live longer=
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.