The Fiji Blue Devil Damsel is a vibrant and popular saltwater fish that is native to the Indo-Pacific region. They require a specific salinity range of 1.020-1.025 to thrive.
 
This fish is relatively small, reaching a maximum length of 3 inches. They have a stunning blue coloration, with a darker blue color on their back and a lighter shade on their belly. Their fins are also a bright blue, adding to their striking appearance.
 
The Fiji Blue Devil Damsel is a semi-aggressive fish and can be territorial towards other fish of a similar size and coloration. They should be kept with other semi-aggressive fish in a larger tank of at least 30 gallons.
 
To ensure the health and happiness of Fiji Blue Devil Damsels, they require a well-maintained tank with plenty of live rock and hiding places to explore. They prefer a temperature range of 75-82°F and a pH level of 8.1-8.4.
 
In terms of diet, Fiji Blue Devil Damsels are omnivorous and will eat a variety of small crustaceans and algae-based foods. They should be fed 2-3 times a day, and their diet can be supplemented with frozen or live foods.