Koran Angel(Pomacanthus semicirculatus)
The Blue Koran Angel, also known as the Koran Angelfish or Semicircle Angelfish, is a striking marine fish known for its dramatic color transformation from juvenile to adult. Juvenile Blue Koran Angels display a vibrant blue and white pattern, often with semicircular markings, while adults transition to a more subdued, yet still beautiful, coloration of blue-green with intricate yellow and blue markings. They are active, semi-aggressive fish that require a large aquarium (at least 220 gallons) due to their size and swimming habits.