Common name: green finger sponge

Scientific name: Iotrochota birotulata (Higgin, 1877)
Underwater coral reefGreen Finger Sponge
Sponge brittle star tentacles with golden zoanthidIotrochota birotulata, green finger sponge

General information

The Convoluted Barrel Sponge, Iotrochota birotulata, is a species of sponge found in the Caribbean Sea. It is known for its distinctive barrel-like shape and convoluted, or folded, surface which gives it a brain-like appearance. This sponge can vary in color from dark brown to greenish-yellow and has a rough, leathery texture.

Details

Recommended minimum tank volume
75 liter (20 gallons)
Salinity
S.G. 1.023 to 1.025
Temperature
24 to 27 °C (75 to 81 °F)
Acidity
pH 8.1 to 8.4
Average size
10 cm (4″)
Care level
Moderate to easy
Diet
Omnivore
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
    Pineapple Sponges
    Iotrochotidae
  6. Genus
    Iotrochota Sponge
    Iotrochota
  7. Species
    green finger sponge
    Iotrochota birotulata (Higgin, 1877)
  8. Synonyms
    Halichondria birotulata Higgin, 1877
    Hyrtios musciformis Duchassaing & Michelotti, 1864
    Iotrochota bistylata Boury-Esnault, 1973

Care

In the home aquarium, Iotrochota birotulata requires a moderate to high flow of water to mimic its natural environment and facilitate feeding. It is a filter feeder, extracting nutrients from the water column. Stable water quality and parameters are crucial for the health of this sponge, as it can be sensitive to changes in its environment.

Reproduction

Sponges like Iotrochota birotulata reproduce both sexually and asexually. Sexual reproduction involves the release of sperm into the water column, which then fertilizes eggs in other sponges. Asexually, they can reproduce by budding, where a part of the sponge breaks off and grows into a new individual.

Symbiosis

While not hosting a wide range of symbiotic relationships like some corals or anemones, sponges such as Iotrochota birotulata do play a role in the ecosystem by providing microhabitats for various small organisms and contributing to the overall health of the reef system.

Habitat

Iotrochota birotulata is typically found in shallow to mid-depth waters of the Caribbean Sea, often attached to hard substrates in areas with strong currents. It is an important member of the reef community, contributing to the structural complexity and biodiversity of the habitat.