Common name: Phorbas tenacior

Scientific name: Phorbas tenacior (Topsent, 1925)
Close-up of rock covered with encrusting sponge (Spirastrella cunctatrix) and (Phorbas tenacior) Larvotto Marine Reserve, Monaco, Mediterranean Sea, July 2009Bluish encrusting sponge (Phorbas tenacior) in Mediterranean Sea

General information

Phorbas tenacior, commonly known as the Red Encrusting Sponge, is a marine sponge species that adds a vibrant touch of color to the reef aquarium. This sponge is known for its bright red to orange coloration and its encrusting growth form, which can cover rocks and other surfaces in the tank. It is a filter feeder, drawing in water to extract nutrients, and is an excellent indicator of good water quality in the aquarium.

Details

Recommended minimum tank volume
40 liter (11 gallons)
Salinity
S.G. 1.023 to 1.026
Temperature
22 to 26 °C (72 to 79 °F)
Acidity
pH 7.8 to 8.4
Average size
5 cm (2″)
Care level
Moderate to easy Prefers strong water flow
Diet
Detritivore Consumes detritus and microorganisms
Reefsafe
Yes
Aggression
Peaceful
Captive bred
No

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Sponges
    Porifera
  3. Class
    Demosponges
    Demospongiae
  4. Order
    Poecilosclerid Sponges
    Poecilosclerida
  5. Family
    Hymedesmiidae Sponges
    Hymedesmiidae
  6. Genus
    Phorbas sponges
    Phorbas
  7. Species
    Phorbas tenacior
    Phorbas tenacior (Topsent, 1925)
  8. Synonyms
    Anchinoe coriaceus tenacior Topsent, 1925
    Anchinoe tenacior Topsent, 1925

Care

The Red Encrusting Sponge requires a well-established aquarium with stable water conditions. It thrives in moderate to high flow areas that facilitate its filter-feeding habits. Lighting should be moderate, as high-intensity lighting can promote the growth of algae over the sponge's surface, which can be detrimental. It is important to note that sponges should never be exposed to air, as trapped air bubbles can cause tissue damage and lead to the sponge's death.

Reproduction

In the aquarium, Phorbas tenacior can reproduce asexually through budding, where parts of the sponge break off and attach to another surface to grow. Sexual reproduction is less common in captivity but involves the release of gametes into the water column.

Habitat

Phorbas tenacior is typically found in the Mediterranean Sea and adjacent Atlantic areas. It prefers rocky substrates and is often found at depths where light is present but not too intense, allowing for the coexistence with other light-dependent organisms.