Hard to know, but it sounds like you are talking to people who have worked directly with these fish or their parents. I'd still hesitate to presume a positive ID on a fish that requires dissection to confirm. Also, likely not relevant, as they are clearly closely related at worst and likely spawn the same way, and could produce viable offspring for you.
The striped raphs bred in a sandy tank with caves and a breeding group of cories and tons of live plants. I wish I could find the video and thread about it...still trying to find it!