Common name: Giant Tunicate

Scientific name: Polycarpa contecta (Sluiter, 1904)
Ascidian Diversity

General information

The Giant Tunicate, Polycarpa contecta, is a fascinating invertebrate commonly found in the marine aquarium trade. Tunicates, also known as sea squirts, are sessile animals that filter feed by drawing water through their siphons. Polycarpa contecta is known for its large size and the ability to contract its body when disturbed, hence the name 'sea squirt'.

Details

Recommended minimum tank volume
100 liter (26 gallons)
Salinity
S.G. 1.023 to 1.026
Temperature
22 to 26 °C (72 to 79 °F)
Acidity
pH 8.1 to 8.4
Average size
10 cm (4″)
Care level
Moderate to easy Prefers strong water flow
Diet
Omnivore Feeds on plankton and detritus
Reefsafe
Yes
Aggression
Peaceful
Captive bred
No

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Chordates
    Chordata
  3. Class
    Sea Squirts
    Ascidiacea
  4. Order
    Sea Cucumbers
    Pleurogona
  5. Family
    Stolidobranch ascidians
    Styelidae
  6. Genus
    Sea Squirts
    Polycarpa
  7. Species
    Giant Tunicate
    Polycarpa contecta (Sluiter, 1904)
  8. Synonyms
    Styela contecta Sluiter, 1904

Care

Caring for Polycarpa contecta requires a well-established aquarium with stable water conditions and low to moderate flow to mimic their natural environment. They are filter feeders, so providing a diet of phytoplankton or fine particulate organic foods is essential. It's important to ensure that the water quality is high, as tunicates are sensitive to poor water conditions.

Reproduction

In the wild, Polycarpa contecta reproduces both sexually and asexually. In the aquarium, sexual reproduction is less common, but hobbyists may observe budding, where a new individual grows from the body of the parent. This can be an interesting process to witness and can lead to a small colony of tunicates over time.

Symbiosis

While Polycarpa contecta does not have the same level of symbiotic relationships as some other marine organisms, it does play a role in the ecosystem by filtering water and potentially providing a surface for other organisms to settle on.

Habitat

Polycarpa contecta is typically found in the Indo-Pacific region, attached to hard substrates in areas with moderate water movement. They can be found at various depths, often in reef environments where they contribute to the biodiversity and health of the ecosystem.