主题：【欣赏】国家地理杂志图片Color-coded Sex Change -- 江南阿宝

Photograph by Tim Laman

From "Coral Reef Color," National Geographic, May 2005

Deep maroon marks a spine-cheek

anemonefish as the dominant female of this host anemone, where she nests with her orange mate. When she dies, he will turn maroon, become female, and mate with the next male in line.