Annularis Angelfish
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Annularis Angelfish Overview
The Annularis Angelfish, also known as the Blue Ring Angelfish or Blue King Angelfish, is a striking species found in the Indo-Pacific region. This guide covers its appearance, diet, and habitat needs.Annularis Angelfish Appearance
Juvenile Annularis Angelfish
- Coloration: Vertically striped with white and light blue.
- Body Color: Black, which gradually changes to a brownish hue as they mature.
Adult Annularis Angelfish
- Coloration: Stunning sapphire stripes that stretch diagonally from the chest to the posterior dorsal fins.
- Body Color: Predominantly brown with a whitish-blue tail.
- Fins: Soft posterior dorsal fins with striking coloration.
Size and Tank Requirements
- Tank Size: A minimum of 220 gallons is essential for an adult Annularis.
- Hiding Spots: Provide plenty of caves and live rock for grazing and hiding.
Behavior and Compatibility
- Aggression: Semi-aggressive and may become territorial after acclimation.
- Reef Compatibility: Not suitable for reef tanks as it nips at sessile invertebrates like feather dusters, tube worms, clams, and corals.
Hermaphroditic Nature
- Sexual Characteristics: Hermaphroditic with no visible difference between males and females. Differences in body shape are noticeable only when fully mature.
Annularis Angelfish Diet & Nutrition
Natural Diet
- Omnivore: Feeds on benthic invertebrates, zooplankton, sponges, tunicates, and coral polyps.
- Additional Foods: Algae, ascidians, weeds, and nektonic fishes.
Aquarium Feeding
- Recommended Foods: Prepared mixes with sponges, frozen meaty items like shrimp, and algae-rich diets like Nori flakes.
- Feeding Frequency:
- Adults: At least two times a day.
- Juveniles: 3-4 times per day.
Annularis Origin
- Geographic Range: Found throughout the Indo-Pacific region from Sri Lanka to the Solomon Islands and from the Philippines to northern Australia.
- Aquarium Release: An unusual sighting was noted near Osezaki, Japan.
Distinctive Features
- Common Names: Also known as the Blue Ring Angelfish and Blue King Angelfish.
- Appearance: Features brilliant sapphire stripes over a brown body with a whitish-blue tail.
Key Considerations:
- Tank Size: Ensure a 220-gallon tank or larger.
- Hiding Spots: Provide ample caves and live rock.
- Reef Compatibility: Not ideal for reef tanks.
- Juvenile Small: 1" to 1 3/4"
- Medium: 1 3/4" to 2"
- Large: 2" to 2 3/4"
- Sub Adult/Changing Small: 2" to 2-3/4"
- Medium: 2 3/4" to 3"
- Medium/Large: 3" to 3-1/2"
- Large: 3-1/2" to 4"
- Adult Small: 3" to 3 1/2"
- Medium: 3 1/2" to 4"
- Medium/Large: 4" to 5"
- Large: 5" to 6"
- X-Large: 6" to 7"
- Show Size: 8" to 9"
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