Common name: Heterorhaphis Sponge

Scientific name: Pericharax heteroraphis Poléjaeff, 1883

General Information

The Heterorhaphis Sponge, scientifically known as Pericharax heteroraphis, is an intriguing addition to the marine aquarium hobby. This sponge is known for its unique tubular structure, which can add a striking visual element to any reef tank. As a member of the Porifera phylum, it plays a crucial role in marine ecosystems by filtering water and providing habitat for various microorganisms.

While not as commonly seen in home aquariums as fish or corals, sponges like the Heterorhaphis Sponge are gaining popularity among advanced aquarists who are interested in replicating natural reef ecosystems. They are appreciated not only for their aesthetic appeal but also for their ecological benefits, such as nutrient cycling and water filtration.

Details

Recommended minimum tank volume
100 liter (26 gallons)
Salinity
S.G. 1.023 to 1.026
Temperature
24 to 26 °C (75 to 79 °F)
Acidity
pH 8.1 to 8.4
Average size
20 cm (8″)
Care level
Moderate to difficult
Diet
Planktivore Feeds on plankton; requires liquid plankton supplements in aquariums
Reefsafe
Yes
Aggression
Peaceful
Captive bred
No

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Sponges
    Porifera
  3. Class
    Calcareous Sponges
    Calcarea
  4. Order
    Glass Sponges
    Clathrinida
  5. Family
    Pineapple Sponges
    Leucettidae
  6. Genus
    Pericharax
    Pericharax
  7. Species
    Heterorhaphis Sponge
    Pericharax heteroraphis Poléjaeff, 1883
  8. Source: GBIF | Global Biodiversity Information Facility

Care

Caring for the Heterorhaphis Sponge requires a mature, well-established aquarium. These sponges thrive in environments that mimic their natural habitat, which includes stable water parameters and moderate water flow to facilitate their filter-feeding process. They do not tolerate air exposure, so care must be taken during handling and placement in the aquarium.

Diet and Feeding

The Heterorhaphis Sponge is a filter feeder, subsisting on plankton and other small particles suspended in the water column. In the aquarium, they benefit from the addition of liquid plankton supplements or finely powdered foods designed for filter feeders. Ensuring a consistent supply of these nutrients is vital for their growth and health.

Symbiosis

Heterorhaphis Sponges often host symbiotic microorganisms, including bacteria and algae, which can contribute to their nutritional needs and enhance their resilience to environmental changes. This mutualistic relationship is a fascinating aspect of their biology and underscores the importance of maintaining stable conditions in the aquarium.

Health and Common Issues

Sponges like Pericharax heteroraphis are sensitive to changes in water quality and can suffer from tissue necrosis if conditions are not optimal. Regular monitoring of water parameters and maintaining a nutrient-rich environment are essential. Avoid exposing them to air, as this can cause irreparable damage to their structure.

Habitat

In the wild, Heterorhaphis Sponges are found in tropical marine environments, often attached to rocks or coral rubble in shaded areas. They prefer stable, nutrient-rich waters where they can efficiently filter feed. Replicating these conditions in the aquarium is crucial for their survival and growth.