Hi waterfaller1
The ID is unclear.
This Stiphodon sp is sold most in Japan.
It is said that they inhabit Indonesia.
Those scientific names are unclear, and it may not be a single species.
Stiphodon.sp "Raibow-color" which was being kept first. The form which is 2008 from 2003.
Stiphodon.sp "Raibow-color" , The individual the whole body was sometimes blackly
Stiphodon.sp "Raibow-color" , 2 males kept from last year. The individual an edge of the tail fin will be in blue.
Stiphodon.sp "Raibow-color" , 2 males kept from last year. The individual an edge of the tail fin will be in red.

I am not used to English. Therefore,It is likely to sometimes misunderstand it.