No it isn't at all correct. It sounds as if you are confusing this word 'ethnic' with the word 'ethics'. Please give us a sentence in which you wish to use the phrase and some context.
"Ethnicity" and "nationality" are not the same.
Please check the definitions to find out which term you intend.
Also, "distinct" is probably not the term you are looking for. It does not mean the same as "different".
Again, please check the definitions.