Female. Cannot ID the fish, but looks nice. She and her mate seem be deciding which of two nest poles they want to use this year.
See additional close-up photo.
Paddling northward on the green trail from Bluff Lake to Kingfisher Landing; Okefenokee National Wildlife Refuge, Georgia. April 18, 2023. Between mile markers 5 and 6; N30.90437° W82.14491°