Bubble-tip anemone

Bubble-tip anemone (Entacmaea quadricolor) is a species of sea anemone in the family Actiniidae.[2] Like several anemone species, E. quadricolor can support several anemonefish species, and displays two growth types based on where they live in the water column, one of which gives it the common name, due to the bulbous tips on its tentacles.

Bubble-tip anemone
A colony of Entacmaea quadricolor. Young individuals may have about 20 tentacles, with numbers increasing during their lifetime.[1]
Scientific classification
Kingdom: Animalia
Phylum: Cnidaria
Class: Anthozoa
Order: Actiniaria
Family: Actiniidae
Genus: Entacmaea
Species:
E. quadricolor
Binomial name
Entacmaea quadricolor
(Leuckart in Rüppell & Leuckart, 1828)
Synonyms
List
  • Actinia adhaerens Hemprich & Ehrenberg in Ehrenberg, 1834
  • Actinia ehrenbergii Brandt, 1835
  • Actinia erythrosoma Hemprich & Ehrenberg in Ehrenberg, 1834
  • Actinia helianthus Hemprich & Ehrenberg in Ehrenberg, 1834
  • Actinia quadricolor Leuckart in Rüppell & Leuckart, 1828
  • Actinia quatricolor
  • Actinia vas
  • Actinia vasa Quoy & Gaimard: de Blainville, 1830
  • Actinia vasum
  • Anemonia adhaerens Ehrenberg
  • Anemonia adherens
  • Anemonia erythrosoma Ehrenberg
  • Anemonia kwoiam Haddon & Shackleton, 1893
  • Anemonia ramsayi (Haddon & Shackleton, 1893)
  • Antheopsis carlgreni Lager, 1911
  • Aulactinia gelam (Haddon & Shackleton)
  • Cereactis quadricolor Leuckart
  • Condylactis erythrosoma (Hemprich & Ehrenberg in Ehrenberg, 1834)
  • Condylactis ramsayi Haddon & Shackleton, 1893
  • Corynactis quadricolor Leuckart
  • Corynactis vas Quoy & Gaimard
  • Crambactis arabica Haeckel, 1876
  • Crambractis arabica
  • Cymbactis maxima Wassilieff, 1908
  • Entacmaea actinostoloides
  • Entacmaea adhaerens Hemprich & Ehrenberg
  • Entacmaea quadricolour
  • Entacmaea ramsayi (Haddon & Shackleton, 1893)
  • Entacmea quadricolor (Leuckart in Rüppel & Leuckart, 1828)
  • Gyrostoma helianthus (Hemprich & Ehrenberg in Ehrenberg, 1834)
  • Gyrostoma quadricolor
  • Gyrostoma adhaerens (Hemprich & Ehrenberg)
  • Gyrostoma adherens (Ehrenberg, 1834)
  • Gyrostoma erythrosoma (Hemprich & Ehrenberg, 1851)
  • Gyrostoma erythrososma (Hemprich & Ehrenberg)
  • Gyrostoma haddoni Lager, 1911
  • Gyrostoma helianthus (Hemprich & Ehrenberg in Ehrenberg, 1834)
  • Gyrostoma heliantus
  • Gyrostoma hertwigi Kwietniewski, 1897
  • Gyrostoma kwoiam (Haddon & Shackleton, 1893)
  • Gyrostoma quadricolor
  • Gyrostoma ramsayi (Haddon & Shackleton)
  • Gyrostoma stuhlmanni Carlgren, 1900
  • Gyrostoma sulcatum Lager, 1911
  • Gysostoma hertwigi
  • Heteractis gelam (Haddon & Shackleton, 1893)
  • Isacmaea erythrosoma (Hemprich & Ehrenberg in Ehrenberg, 1834)
  • Isactinia kwoiam (Hadd. & Shackl.)
  • Melactis vas
  • Metactis vas
  • Paracicyonis maxima
  • Paractis adhaerens
  • Paractis ehrenbergii Br.
  • Paractis erythrosoma
  • Paractis helianthus
  • Physobrachia douglasi Saville-Kent, 1893
  • Physobrachia ramsayi Mariscal, 1970
  • Physobrachia ramsayi (Haddon & Shackleton, 1893)
  • Psychobrachia douglasi
  • Radianthus carlgreni (Lager, 1911)
  • Radianthus gelam (Haddon & Shackleton, 1893)
  • Ropalactis vas Quoy & Gaimard

Distribution

Entacmaea quadricolor is widespread throughout the tropical waters of the Indo-Pacific area, including the Red Sea.[3]

Amphiprion melanopus anemonefish in a bubble anemone from East Timor

E. quadricolor anemones appear in a variety of morphs, including rose, orange, red, and standard green. This sea anemone can grow to be up to 30 centimetres (0.98 ft) in diameter, and obtains the majority of its energy from solar radiation via its symbiotic zooxanthellae.

A characteristic of E. quadricolor is its ability to maintain a symbiotic relationship with the anemonefish, which can be "hosted" by the anemone by providing it with defence against predators and also providing some nourishment. In turn, the anemone provides the anemonefish with shelter.

Nutrients are generally obtained by filter feeding using its sweeping tentacles, or through wastes and debris cleaned from the surface of its partner anemonefish.

In the wild, E. quadricolor are found in two locations. Large adult specimens, with tentacles that are more streaming or stringy, are often found in deeper waters with more dimly lit conditions. These specimens are often solitary, while smaller, younger specimens are often located in groups or colonies nearer to the surface, in bright sunlight. These specimens tend to show the bulbous tips on their tentacles that are characteristic of E. quadricolor. The tips of the anemones will have their characteristic bulbs based on several parameters, including; flow, light, bacterial count, color, and if its hosting. When they are placed in home aquariums, medium flow and medium lighting will be sufficient if your tank is old enough to captivate anemones.

Symbionts
Shrimp on Red Sea bubble-tip anemone

E. quadricolor is found within the range of most anemonefish and is highly generalist, hosting 14 different species, around half the species of anemonefish.[4] It is thought the primary reason it does not host other species is competition, with other factors being habitat preferences or host-fish biochemical signalling.[4] The anemone fish hosted by E quadricolor are: [3]

E. quadricolor also associates with juvenile Dascyllus trimaculatus and shrimps such as Periclimenes brevicarpalis.[6]

Aquaculture

In aquariums, E. quadricolor will reproduce asexually or sexually when in proper care with supplemented minerals such as iodine and other trace elements, usually purchased as an enrichment cocktail by most home aquarists. E. quadricolor is commonly kept in marine aquariums and comes in variety of colors, green and rose being the most common. Without adequate lighting, the anemone will expel its photosynthetic symbiotic zooxanthellae, a process commonly known as "bleaching" which will progressively result in its death. White or excessively translucent specimens are likely in various phases of bleaching and should not be purchased.

Anemones are not easy to keep, and require a knowledgeable aquarist. The aquarium must be at least 6 months old and stable to receive the anemone. The bigger the tank, the easier it'll be to keep a healthy anemone.[7]

  • A group of individuals
  • Rose
  • Green tipped
  • Bleached (unhealthy)

References
  1. Scott, Anna; Harrison, Peter L. (1 June 2008). "Larval settlement and juvenile development of sea anemones that provide habitat for anemonefish". Marine Biology. Berlin / Heidelberg: Springer. 154 (5): 833–839. doi:10.1007/s00227-008-0976-1. ISSN 0025-3162.
  2. Daly, M. & Fautin, D. (2014). "World List of Actiniaria. Entacmaea quadricolor Leuckart in Rüppell & Leuckart, 1828". WoRMS. World Register of Marine Species. Missing or empty |url= (help) |id=289898 |accessdate=11 March 2019 }}
  3. Fautin, Daphne G. & Allen, Gerald R. (1997). Field Guide to Anemone Fishes and Their Host Sea Anemones. Western Australian Museum. ISBN 9780730983651. Archived from the original on 14 April 2015.
  4. Ollerton, Jeff; McCollin, Duncan; Fautin, Daphne G. & Allen, Gerald R. (2007). "Finding NEMO: nestedness engendered by mutualistic organization in anemonefish and their hosts". Proceedings of the Royal Society B: Biological Sciences. 274 (1609): 591–598. doi:10.1098/rspb.2006.3758. PMC 1766375. PMID 17476781.
  5. Allen, G.; Drew, J. & Kaufman, L. (2008). "Amphiprion barberi, a new species of anemonefish (Pomacentridae) from Fiji, Tonga, and Samoa". Aqua, International Journal of Ichthyology. 14: 105.
  6. Fautin, Daphne G.; Guo, Chau-Chih & Hwang, Jiang-Shiou (1995). "Costs and benefits of the symbiosis between the anemoneshrimp Periclimenes brevicarpalis and its host Entacmaea quadricolor". Marine Ecology Progress Series. 129 (1/3): 77–84. doi:10.3354/meps129077. JSTOR 24855576.
  7. "Bubble Tip Anemone (Entacmaea quadricolor) Care, Tank Setup, Host & Reproduction | The Aquarium Club". theaquarium.club. Retrieved 2018-08-30.
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