The Half Blue Damsel, Chrysiptera hemicyanea, sometimes stylized as the Half-Blue or Halfblue Damsel, features a half blue half yellow body with a spiky dorsal fin. The Half Blue Damsel is a completely reef safe fish which feeds on zooplankton and algae while ignoring small invertebrates. The feeding should be made in small portions several times per day. The Half Blue Damsel requires moderate level of care and thus, making it a very good choice for a beginner aquarists. It is hardy in nature and mostly resistant to diseases. Also, many hobbyists use it to cycle a new tank. The Half Blue Damsel should never be kept with large fish who can view it as snack and might ingest it. It should not be kept in a tank less than 10 gallon, and is suitable for smaller group. The Half Blue Damsel should be fed with vitamin enriched shrimp to maintain its vibrant color through out its stay in the tank. Your tank must have lots of rock work, coral, or plants to give a realistic feel to the Half Blue Damsel. It thrives well in a temperature range of 72-78 degrees Fahrenheit, pH of 8.1-8.4 and brightly lit aquarium. The Half Blue Damsel is also popularly known as Azure Damselfish, and looks awesome under actinic lighting. It is advisable not to keep the Half Blue Damsel with predatory fishes, and is compatible with reef and do not tend to harm or eat corals.