Yes, this is an animal. The Spanish dancer (Hexabranchus sanguineus - meaning "blood-colored six-gills") is a dorid nudibranch (sea slug). I think it's great color and design inspiration for a crocheted afghan.
Genetically engineered angelfish (Pterophyllum) glow in a tank at the 2012 Taiwan international aquarium expo. The fish are the world's first pink fluorescent angelfish and can view without black light.