Taiwan reef fish (one of the Protomelas sp. steveni). I've had many of these and it's most obvious in the second photo, first photo could easily be mistaken for a peacock imo. Note the white blaze in second photo. Typical of taiwan reef males (although the blaze can vary on different individuals, similar to mloto, fryeri, etc.) Aulonocara koningsi do not have this blaze, at least not that I've ever seen.
They actually come from more than location and between this, individual differences between specimens, changing mood, and varying tank raised breeding strains, they vary somewhat in appearance, including extent, intensity, and shade of the orange to maroon flank, coverage of the white blaze, prominence or lack of barring, etc.
Indeed, female taiwan reef fish look quite different from males and you'd be hard pressed to distinguish them from some of the other protomelas species.