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Trumpet Anemone

Trumpet AnemoneRock Anemone, Glass Anemone

Trumpet Anemone, Aiptasia mutabilis, also known as Rock Anemone and Glass Anemone Glass Anemone or AiptasiaAiptasia mutabilisPhoto © Animal-World: Courtesy Greg Rothschild

     The Trumpet Anemone is a distinctive, colorful Aiptasia, but unique because it is a cold water species!

     The Aiptasiidae family offers several interesting variations of anemones that are easy to care for and reproduce quickly. The Trumpet Anemone is one of these hardy varieties. It is a cold water aiptasia however, so is not as common in the saltwater aquarium trade as its smaller aiptasia relatives.

     The Trumpet Anemone is similar in structure to its smaller, but better known weedy aiptasia cousins. Like the Glass Anemone, Brown Glass Anemone, and Small Rock Anemone, it too has tons of tapering tentacles on the outer margin of its oral disc. But unlike its cousins it doesn't retract its tentacles as readily. The Trumpet Anemone can easily be recognized by the characteristic color pattern of its tentacles, which are often tinted with greens or blues. It is also quite a bit larger than other Aiptasia, reaching up to 4.75" (12 cm) tall.

   The smaller Aiptasia anemones don't have a very good reputation with saltwater hobbyists, and they can reach plague proportions in a saltwater aquarium or a reef tank. Scientific studies have determined that the Aiptasia have strong stings. They use venomous cells, nematocyst found in their tentacles, to sting corals and fish.

     Infestations of Aiptasia are very hard to get rid of and the smaller species have been known to take over a reef aquarium by quickly reproducing while stinging and killing other tank invertebrates. The Trumpet Anemone, being quite a bit larger, is easier to control. It doesn't have quite the same bad reputation, however they do have strong stings and don't "play nice" with corals and other anemones. Use careful placement and keep other invertebrates out of their reach.



Scientific name

     Family: Aiptasiidae

     Species: Aiptasia mutabilis

Distribution / Background

     Sea Anemone Facts: The Trumpet Anemone Aiptasia mutabilis was described by Gravenhorst in 1831. Other common names it is known by are Rock Anemone and Glass Anemone.

     Where are Sea Anemones Found: The Trumpet Anemone is found in the cold waters of the North Eastern Atlantic, in the Mediterranean, near the Azores Islands, and from Ireland to the Canary Islands and in the region of the British Isles.

     Sea Anemone Habitat: Trumpet Anemones attach to stones, rubble, and other hard substrates. They also are found under rock ledges in shallow areas, and attached to wood structures as well. They feed on zooplankton and fish at depths between 0 - 65 feet (0 - 20 m).

     Sea Anemone Species: There are 17 species in the Aiptasia Genus. General common names all the various Aiptasia anemones are known by are the Glass Anemone, Glassrose Anemone, Rock Anemone, Devil ’s Plague, Aiptasia Anemone, Pest Anemone, and sometimes by this misspelling, Aptasia.

Status

     Aiptasia mutabilis is not on the IUCN Red List for endangered species

Description

     Appearance of a Sea Anemone: The Trumpet Anemones are somewhat translucent with an overall brown or yellowish-brown coloration, usually marked by green or blue lines radiating from the mouth. Their coloring comes from an algae called zooxanthellae living in its tissues. There are often irregular streaks of opaque white on the column, the tentacles become pale towards the tips.

     Aiptasia mutabilis can get up to about 4.75" (12 cm) tall. Their body form is the polyp. It is composed of a smooth column, variable in shape but usually trumpet-like. It is topped with an oral disc that has a mouth in the center. There are close to 100 tentacles positioned on the outer margin of the oral disc. They are stout at the base and then taper to a fine point. Their tentacles are perfectly retractable, but they rarely retract them.

     How do glass anemones move?: The Trumpet Anemone has a pedal disc or 'foot' with which it attaches to the substrate. If tank conditions are not ideal they will use their "foot" to move along the substrate. They do this by contracting the circular muscles of the foot and pushing forward. They may also crawl on their side by attaching to the substrate with adhesive spots (not easily visible) on column.

     Sea Anemones Life Cycles: It is unknown how long they live, in fact some anemones can be hundreds of years old in the wild, and in captivity have been known to last 80 years or more.

Difficulty of Care

     Sea Anemone Care: The Trumpet Anemone can be moderate in difficulty to care for. They will do fine in most reef conditions, but must be provided with a cold water environment. When choosing a Trumpet Anemone, make sure the color is good, their mouth is not gaping open, and their foot and tentacles are sticky to the touch. Using a very thin blunt item like a credit card, wiggle it under the foot and slowly nudging it away will get the anemone off the glass. On a rock, well, you will never get it off and you would need to purchase the rock as well.

Foods / Feeding

     What Do Sea Anemones Eat: The Trumpet Anemone is a carnivore. In the wild Aiptasia derive nutrition from their symbiotic algae, zooxanthellae, as well as from the water around them. The Trumpet Anemone will use their tentacles to capture fish, mussels, and small crustaceans that happen by, then insert the food into their mouths for ingestion. In captivity you can feed your anemone chopped silversides, shrimp, krill, and mussels, fresh chopped fish (from your grocery store), as well as frozen carnivore preparations. They need to be fed 2 to 4 times a week.

Aquarium Care

     Water changes of 10% bi-monthly or 20% a month are typical, yet the more nutrients you have the happier it will be. One average sized Trumpet Anemone (4") is equal to 2 or 3 fish as far as waste production is concerned. Purigen and Poly-fiber are great products to help in maintaining water quality. Purigen is a synthetic polymer that removes soluble and insoluble impurities from water at an exceptionally high rate and capacity, helping to control ammonia, nitrites and nitrates. Additions of Iodine and and trace elements are suggested.

Aquarium Parameters

     The typical reef environment is what is needed for your anemone, but it must be a cold water reef. They need live rock or some other solid material they can attach to. Provide some rock crevices as well as rocky overhangs. Be sure to have all of your pumps covered. Most good quality pumps have guards on them and are worth the investment.

  • Minimum Tank Size / Length:  50 gallons (190 L)
  • Marine Lighting - How much light for anemones: Moderate. Coming from shallow waters in the wild, these anemones will do their best with fairly good lighting.
  • Temperature: 50 ° - 68 ° F (10 ° - 20 ° C)
  • Salinity / Specific Gravity: 1.023 to 1.025
  • Water Movement: Moderate
  • Water Region: Bottom of the aquariums

Compatibility and Social Behaviors

    The Trumpet Anemone is an aggressive anemone that can kill and eat fish, as well as other corals and anemones. Be very careful when keeping this anemone with any other anemones, corals, or fish. They are not suitable clown fish hosts and clown fish can be eaten, as can any other fish that happens by and gets caught. This is a safe ornamental anemone for most reef tanks. Just keep in mind these anemones will sting everything they can reach, like corals and other invertebrates. After splitting, Trumpet Anemones will tolerate their own "clones" and sometimes their own species.

Sex - Sexual differences

     Studies of A. pallida and A. pulchella have determined that Aiptasia individuals are dioecious, meaning that individuals are of separate sexes. However, no sexual difference in appearance is known.

Breeding and Reproduction

     Propagating aiptasia anemones is fairly easy, just cut a piece off and it will grow. Anemones in general can multiply by sexual and asexual means. Aiptasia will multiply asexually by fission, which is where a tiny bit of tissue detached from the foot quickly develops into a new and complete anemone.

     Aiptasia anemones will tolerate their own "clones", and these anemones are very prolific. This is why it is very difficult to physically remove these anemones from a rock. Any remaining tissues quickly multiply into to new specimens. Sexual reproduction has not been described for the species.

Potential Problems

     Problems for the Trumpet Anemone are pretty minimal unless your lighting, water movement, feeding and water quality are low. Then your anemone will detach to look for "better conditions." This usually results in an unpleasant experience with a water pump.

Availability

     Buy Sea Anemone: The Trumpet Anemone Aiptasia mutabilis is very rarely available in stores but occasionally found online, and is rather expensive. The cost online is around $12.00 to $14.00.

References




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