If there is any fish which is very difficult to maintain in home saltwater aquarium then that must be the queen angelfish. This is because of their size, diet and behavior towards other angel-fishes. You can’t place them with similar species like emperor angelfish and French angelfish. They’re usually found on the coral reefs of the Western Atlantic Ocean. In the wild you’ll either see them in pair or alone dwelling in the middle or bottom in reef.
Because of their huge size they’re not usually preferred for any tank less than 200 gallons. Very few aquarium shops keep them for sale so your best bet to purchase them is from online stores.
Size & color : Queen angelfish grows to size of about 18inches(45cms). Because of this huge size adults are not preferred for the small saltwater tank setup. Juvenile and Adults vary in coloration and it takes some time to change the coloration of juvenile. Juveniles are much darker than adults and has vertical bars on the body. Later when they become mature they lose those bars and develop a crown like shape on the head and this is the reason they got name as “queen angelfish”.Queen angelfish is also known as blue angelfish or yellow angelfish.
ph & temperature: You need to maintain temperature of about 22°C – 24°C. ph should be maintained at 8.1 – 8.4 with carbonate hardness of about 8 – 12°dKH.
Food: Queen angelfish prefers to eat sponges,marine algae, spirulina. Ocean nutrition has fish food for angelfish which you can give them. They’ll prefer tank with live rock and will feed on most of the species in reef tank. They also prefer eating jellyfish, soft corals and tunicates for their diet. You can give them mix of meaty food and sponges, frozen algae regularly.
Breeding: Pair formed is usually long term. Female lays eggs in the number 50-75 thousand. This number reaches to million a week during spawning cycle. Eggs hatch quickly in about 15-25 hours and turn into larvae and within 3-4 weeks larvae develops into fish. You’ll find it hard to differentiate between male and female. Only thing you’ll be able to observe is male grows quite longer than female. They rarely breed in captivity but there are some successful reports of breeding them in captivity.
Behavior : They’re quite peaceful with any other species but are harmful towards their own species and other angelfish. Due to their huge size it is suggested that we should avoid placing them with small species. Also not to place them with black angelfish, imperial angelfish.
They’re quite hard to maintain on home saltwater aquarium setup because of their huge size. It’s also hard to feed them sometimes. If given large size tank of about 200 gallons then and only then you should purchase queen angelfish. Queen angelfish costs around 100$-200$. If you can maintain large saltwater tank then they’ll prove to be a good show for your tank.