The Bluefin Pygmy Angelfish is commonly referred to as the Dusky Cherub, Manyspined Angelfish, Multi-spined Angelfish, and Black Angelfish. It grows up to 6 inches in the wild but is imported at about 1 inch and needs to be kept in a tank not less than 30 gallon. The Bluefin Pygmy Angelfish needs plenty of space to move around as it often likes to cruise the tank in search of algae and other bits of food. The ever inquisitive Blue Fin Angelfish resembles the more popular Coral Beauty Angelfish both in appearance as well as disposition. The blue coloration in its anal and caudal fins stands out and glows under intense aquarium lighting. Since the Bluefin Pygmy Angelfish mainly looks for algae, we suggest you to keep a few live rocks in the home aquarium where algae can grow naturally. The aquarium must contain a lot of crevices for the Bluefin Pygmy Angelfish to seek shelter in. The Bluefin Pygmy Angelfish thrives well in a temperature of 72-80 degree Fahrenheit and pH value between 8.1-8.4 and the water hardness at 8-12. Keeping the centropyge angelfish in group or singly is recommended because if it is kept in more than one then they might end up in violence and aggression. The Bluefin Pygmy Angelfish is not really considered reef safe, as it have the tendency to nip corals and other types of invertebrates. It is prone to nip stony and soft corals, and can also harm feather dusters and anemones. The Bluefin Pygmy Angelfish feeds chiefly on algae and also ingest tiny organisms. Additional meaty foods such as brine shrimp and Mysis shrimps are also beneficial in its continued healthy growth.