Matte charcoal black with a single white bar on the flank shaped like an old keyhole, and a yellow-edged tail. Understated where most angelfish shout, and one of the calmest of the dwarfs.
Temperament
Common health issues
- Ich (white spot)
- Fin rot
- Parasites
- Nutritional deficiency
Care at a glance
- ExerciseModerate
An active swimmer that appreciates open swimming space.
- GroomingAttentive tank care
Sensitive to water quality โ stay on top of testing and maintenance.
- Living spaceNano-tank friendly
Happy in a small, stable, well-filtered tank.
- Owner experienceSome experience helps
A little know-how makes life smoother.
- Commitment8โ15 years
Plan for a long, loving relationship.
Health to watch: Ich (white spot) ยท Fin rot ยท Parasites
๐ Care guide
The Keyhole Angelfish (Centropyge tibicen) is a western Pacific dwarf angelfish reaching about 16 to 18 cm, which makes it one of the largest in its genus. Adults are near black with a vertical white oblong mark on each side and yellow along the lower body and tail edge. Juveniles carry a blue-ringed spot that fades with maturity. Because of its adult size it needs 250 litres or more, at 24-27C, salinity 1.024-1.026, pH 8.1-8.4, with mature live rock providing grazing and hiding places. Feed a varied diet of spirulina and algae-based preparations, mysis, enriched brine and angelfish formulas containing sponge, offered two or three times a day. It is hardy and among the more peaceful dwarf angels. The standard dwarf-angel caution applies honestly: individuals may nip at LPS corals and clam mantles, so it is reef safe with an asterisk and the risk varies from fish to fish.
Frequently asked questions
How active is a Keyhole Angelfish?
Moderate. An active swimmer that appreciates open swimming space.
How much maintenance does a Keyhole Angelfish need?
Attentive tank care. Sensitive to water quality โ stay on top of testing and maintenance.
What tank size does a Keyhole Angelfish need?
Nano-tank friendly. Happy in a small, stable, well-filtered tank.
Is a Keyhole Angelfish a good fit for first-time owners?
Some experience helps. A little know-how makes life smoother.
How long do Keyhole Angelfish live?
8โ15 years. Plan for a long, loving relationship.
What health issues affect the Keyhole Angelfish?
Keep an eye out for Ich (white spot), Fin rot, Parasites. These are worth raising with your vet, along with any screening they recommend.
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