I recently learned of these genetically engineered, fluorescent pink angelfish in Taiwan. Proteins from a coral were injected into the fish egg to produce the vibrant hues. According to the news report, fish use their 'bioluminescence' to communicate, attract prey and distract predators. I like to think they glow pink when their hearts light up, as I've pictured them in my painting. Did you know that freshwater angelfish are monogamous?