Tank size for 3 guppies?

[Wyld-Fyre]

Gonna break my taboo of not touching livebearers, and am thinking of buying at least 3 Guppy's. What's the suitable size for three to live 'happily'?

 

[a1wonder]

Guppies you could most likely get away with putting all three in a spare 5 gal and perhaps a pair of otos if you have proper filtration and air circulation in the water. These are very hardy fish and do well in any size aquarium