Guppies--This is considered a "beginners fish" because they are so easy to care for but they have been bred in so many gorgeous colors and tail shapes they are well worth keeping even for advanced aquarists. I would love to go to a guppy show!
The Mandarinfish or Mandarin Dragonet _ is probably the most colorful aquarium fish in the world. It is scientifically named Synchiropus splendidus. _ Amazing Animals: The World’s Most Colorful Aquatic Animals