Anthias Morphing?

Hi All...
I bought three purple eye anthias about three weeks ago.

The larger of the three is developing an elongated fin up top and his pelvic fins are turning black... not in a bad way like sickness. They are just changing color evenly.

Could this be the start of the male transition within the harem?

Attached is the best pic I can find...

Thanks

Attached Thumbnails