Common name: Old Woman Angelfish
General Information
The Old Woman Angelfish, scientifically known as Pomacanthus rhomboides, is a striking species that captivates aquarists with its unique coloration and patterns. This species is native to the western Indian Ocean, particularly around the coastal waters of South Africa and Mozambique. Its name, "Old Woman Angelfish," is derived from the fish's distinctive facial markings, which some say resemble the wrinkles of an elderly woman.
While not as commonly seen in the aquarium trade as some of its angelfish relatives, the Old Woman Angelfish is prized for its beauty and the challenge it presents to experienced hobbyists.
Details
- Estimated price
- Expensive
- Recommended minimum tank volume
- 500 liter (130 gallons)
- Salinity
- S.G. 1.023 to 1.026
- Temperature
- 24 to 28 °C (75 to 82 °F)
- Acidity
- pH 8.1 to 8.4
- Average size
- 45 cm (1′6″)
- Care level
- Moderate to difficult
- Diet
- Omnivore Feeds on sponges and algae; requires varied diet in captivity
- Social
- Solo
- Reefsafe
- No
- Aggression
- Semi aggresive Territorial, especially as it matures; needs ample space
- Captive bred
- No
- IUCN Red List
- EXEWCRENVUNTLC
Taxonomy
- KingdomAnimalsAnimalia
- PhylumChordatesChordata
- ClassRay-finned FishesActinopterygii
- OrderPerch-like FishesPerciformes
- FamilyAngelfishesPomacanthidae
- GenusAngelfishPomacanthus
- SpeciesOld Woman AngelfishPomacanthus rhomboides (Gilchrist & Thompson, 1908)
- SynonymsHolacanthus rhomboides Gilchrist & Thompson, 1908
- Source: GBIF | Global Biodiversity Information Facility
Care
Caring for the Old Woman Angelfish requires a commitment to maintaining excellent water quality and providing a spacious environment. This species thrives in large aquariums with plenty of live rock for grazing and hiding. Due to its size and territorial nature, it is best suited for advanced aquarists who can provide the necessary care and attention.
The Old Woman Angelfish requires a diet rich in marine algae, sponges, and high-quality angelfish preparations. Regular feedings of varied foods will help maintain its vibrant colors and overall health.
Diet and Feeding
In the wild, the Old Woman Angelfish primarily feeds on sponges and algae. In captivity, it should be offered a varied diet that includes marine algae, spirulina, and specially formulated angelfish foods. Supplementing with fresh or frozen seafood such as shrimp and squid can also be beneficial.
Feeding should occur two to three times daily, with portions adjusted to prevent overfeeding and maintain water quality.
Behavior and Compatibility
The Old Woman Angelfish is known for its semi-aggressive temperament, especially as it matures. It can be territorial, particularly in smaller tanks or when housed with similar species. Providing ample space and hiding spots can help mitigate aggressive behaviors.
This species is best kept with other semi-aggressive or peaceful tank mates that can hold their own. Avoid housing with overly aggressive species that may stress the angelfish.
Health and Common Issues
The Old Woman Angelfish can live for over a decade in captivity with proper care. Ensuring stable water parameters and a balanced diet is crucial to its longevity.
When selecting an Old Woman Angelfish, look for individuals with clear eyes, vibrant colors, and no visible signs of disease. Regular monitoring and maintenance of water quality will help prevent common issues such as ich and marine velvet.
Habitat
In the wild, the Old Woman Angelfish inhabits coral reefs and rocky areas where it can graze on algae and sponges. It is typically found at depths ranging from 10 to 40 meters. The species prefers warm, clear waters with plenty of hiding spots and grazing opportunities.