Minimum # Of Gallons?

[Oscar Betta]

If I want to fit 4 albino cory cats, and a school of either neon tetras or cardinal tetras, what is the minimum # of gallons they can fit in?

 

[Katty]

I think 15 gallons or more would be a good size, any smaller and it wouldn't be big enough to support a good sized school of neons (10 or more).

 

[Oscar Betta]

Alright, thanks.