That clown is still too young to turn female.
Mature, well fed male can turn to female in a little as 6 weeks.
I breed clowns. I had a mature breeding Percula pair. I split that pair up and pair her with another clown and put another male in with the male. The two males pair up, well fed they lay their first patch in 6 weeks.
My conclusion is that clowns (at least A. percula) can go from male to functional female in a little as 6 weeks.