Summary: Some of the most exquisite, beautiful tropical fishes are available for sale online. There are various sites that showcase fishes of highest quality and in healthy condition offering at numerous price ranges to be taken home.
Glaucus atlanticus (commonly known as the sea swallow, blue angel, blue glaucus, blue dragon, blue sea slug and blue ocean slug). This little sea slug eats poisonous jellyfish and stores their venom for its personal use
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.