Rotala wallichii question

[o2bubble]

Hi, in oriental book, there are 2 forms, one is labeled as "Rotala Wallichii" and the other as "Rotala Wallichii (long leaves)". Is the difference only in leaves length? What is the type that ADA tanks commonly used in their scaping? I bought the normal one but it seems smaller and color is dull copper compared to those I see in ADA scapes. Am I getting the correct one? Thanks for advise.

[ranmasatome]

yes it is only the leaf length. ADA uses quite a few types of rotala, how to say correct or wrong?