Talk:Primary Containment Facility/@comment-73.58.177.222-20170215015748/@comment-111.220.125.152-20170215232850

It tells you why on the Sea Emperors Page.

Despite being a female, the captive  Sea Emperor  is referred to as "Sea Emperor" rather than "Sea Empress"  [6].
 * This is because the species is named the Sea Emperor, the last one happens to be female.