Do guppies need a filter?

I have a ten gallon tank with guppies and it has a filter. I'm not planning on getting rid of it I just wondered because I have heard a lot of different answers. read more

Guppies can live in a small tank, but they need a filter. The only fish that can live without a filter are Bettas So not even 1 small goldfish will do well in a 1 gallon aquarium, and guppies need filters. read more

Guppies need enough room to move around comfortably. They are speedy swimmers and like to dart back and forth, so plenty of space is important to their happiness and overall success. Figure on giving your fish about 2 gallons of water each, though you can get by with keeping three of them in a 5-gallon tank. read more