[James From Cali]

I am in quite a confusing situation. I am going to get some Honey Dwarf Gourami's(Colisa sota/chuna) for my 10g aquarium. Some sites I go on say 1" some say 2.5". What is the right size? I want to add 2 males and 3 females to the tank if they are an inch with maybe some Oto's once I get all plants.

Thanks a bunch guys and gals.