Baoris oceia?

Yes. It should be Baoris oceia.
Both species have a hair tuft in the male.

Colouration may not be an accurate guide.

Baoris; Generally darker, FW outer margin sinuous, the lower part slightly concave.
FW spots tend to be reduced in nos. ie subapical spot 1, upper cellspot often absent.
Singapore males.
https://www.butterflycircle.com/chec...-Simon-Sng.jpg
https://www.besgroup.org/wp-content/...d-dropping.jpg
https://www.butterflycircle.com/chec...ift---Khew.jpg

Baoris farri; In India & S. China, B. oceia is absent & so B. farri is more reliably IDed.
Male often have a full complement of spots (Perhaps not in Singapore).
Generally lighter brown.
FW outer margin straight or slightly convex.
Yunnan.
https://live.staticflickr.com/8293/7...d63b4cb4_b.jpg
India.
https://commons.wikimedia.org/wiki/F...h_Swift_10.jpg
https://www.ifoundbutterflies.org/me...c5e5b64c-1.jpg
https://www.ifoundbutterflies.org/me...14e45ea5-1.jpg
https://www.ifoundbutterflies.org/me...Saji_ad697.jpg

Singapore male.
https://2.bp.blogspot.com/-jE5CT4nr9...i_adult_03.jpg

TL Seow: Cheers.