The ellioti are a little harder to sex than some species but I'm inclined to think that is a male. The tail base is bigger on the males than the females but the differences are very subtle between the two. This particular specimen also has fairly well defined lateral stripes with dark patch underlines and is showing a lot of colour although those points can't always be used as definitive sex indicators.
I took a quick peek at one of your previous threads on the subject and I think you've got two males. Would it be possible to post some clear, updated pics of both?
I really miss working with the ellioti and bitaeniatus complex in general so never fear that you will bore me with pics of your crew!
Cheers,
T