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Pictures from a coral frag conference! Live coral frags and topics on Nano Reef Aquariums and large reef aquariums, taking care of a reef and coral propagatio
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Octocorals include some of the best beginner corals, the Soft Coral and Leather Coral, and other popular corals like Gorgonians, Blue Coral and Organ Pipe Coral, and the intriguing Sea Pens and Mat Polyps!
I would like to purchase a quantity of Aiptasia for my Berghia Nudibranch. If you have some available, please respond. bobtc100@yahoo.com Bob
I am looking for either a larger one or a few smaller frags Jacob
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I was wondering if you had a piece of stag horn coral in it’s natural golden tan color. I’m not a huge fan of all the bright green or deep purple specimens I usually find. Also if you do have the color stag I’m looking for I’m probably not going to be buying it for a couple of years because the tank it’s going to go in is currently somebody else’s, so it’s going to be a long process of getting it to my house and then starting the system back up. Mason Ciarpella
Does anyone have a fleshy sea pen? Anonymous
Does anyone have a frag of Lobophytum crassum I can buy from? chen ming
I had a large rock full of polyps up until 3 months ago My nitrates rose very high (magenta colored), probably from over feeding. They have not opened in several... (more)Greg
The Green Star Polyps is a durable, pretty soft coral, and can be recommended for beginners!
The Green Star Polyps Pachyclavularia violacea is a striking beauty, and very robust. With a perfect complement of color, it has a bright purple to reddish colored mat and very green, yellow, or light green tentacles. Rather than the feathery tentacles seen on encrusting gorgonians, it has 8 bold tentacles that are thin and smooth. They surround a center opening, or mouth, that is often another contrasting color adding an additional spark to these already attractive mat polyps.
Getting a specimen with green tentacles and a purple base makes for quite a glow under actinic lighting. Yet there are also pretty color morphs, like the Brown Star Polyps pictured under the description below. Other colors include those with white or yellow polyps. The center, or mouth, is often a contrasting color, giving these mat polyps an attractive appearance. Various names these corals are known for include Daisy Polyps, Star Polyps, Mat Polyps, Starburst Polyps, and Eight Tentacle Polyps.
The true Star Polyps are mat polyps of the Pachyclavularia genus in the Tubiporidae family. They have a bright purple to reddish colored mat and very green, yellow, or light green tentacles. Another well-known and colorful member of this family is the Organ Pipe Coral Tubipora musica.
Identifying the Green Star Polyps is very easy, but there are a couple of other genera like Briareum, Clavularia, and Anthelia that they can be confused with. Pachyclavularia and Briareum are the two genera usually reputed as the "encrusting gorgonians" or "star polyps". The Green Star Polyps do form flat stolons, or mats. But their mats are quite irregularly layered and rubbery feeling, and flatter than Briareum corals like the Pacific Encrusting Gorgonian B. stechei. The polyps residing within their mat are also less feather-like in comparison, a good example is those seen on the Corky Sea Finger B. asbestinum.
Through an early mis-identification, the Green Star Polyps have also been incorrectly called Clavularia viridis. However they lack the lush side branches, or pinnules, of the Clavularia genus. From a description of Clavularia, you will quickly see that Star Polyps do not fit the Clavularia "glove". A good example can be seen in the Palm Tree Polyps Clavularia viridis.
The Pachyclavularia genus is very easy to care for. They are very robust, will eagerly spread, and are simple to propagate. Their main requirement is moderate to strong turbulent water flow. They are happy with fluorescent lighting, and providing actinic lighting can bring out any iridescent colors. It may be helpful to keep the colony on a rock that isn't connected to any of the rock work, or they may spread and take over some corals. This is a great beginners coral and a wonderful candidate for those who want to try propagation techniques.
The Green Star Polyp, or as many call it, GSP, are easy to care for. They are best kept in a 50 gallon tank or more and they like bright lighting, however they can tolerate less light with supplemental feedings. They like moderate to high water movement, and will not do well in slower waters. Lysmata or Saron Shrimp will feed on them and certain species of algae will grow over them.
Soft Coral Information: The Pachyclavularia genus was described by Roule in 1908. True Star Polyps are mat polyps of the Pachyclavularia genus, members of the Family Tubiporidae. They have a bright purple to reddish colored mat and very green, yellow, or light green tentacles. Some common names they are known by are Green Star Polyps, Brown Star Polyps, Daisy Polyps, Star Polyps, Mat Polyps, Starburst Polyps, and Eight Tentacle Polyps.
The scientific classification of the Green Star Polyps has a long history of confusion. In his book "Aquarium Corals, Selection, Husbandry and Natural History", author Eric H. Borneman describes the sequence of events. The confusion started with Quoy and Gainard describing both C. violacea and C. viridis in 1863, and then it was again described by HIckson in 1894. This lead to a deternimation that there were problems with its identity. In a broad stroke, this and a few other poorly defined genera were then just lumped into the Clavularia genus. This has been somewhat sorted out since, and the Green Star Polyps are no longer considered a Clavularia species. However the result was that in some literature it was then called C. violacea, and this unfortunate misnomer still shows up occasionally today.
Today the Green Star Polyps is generally considered to be of the Pachyclavularia genus, though the scientific name P. violacea itself is not a valid species name. There are also some experts who treat the Pachyclavularia genus and the encrusting gorgonians of the Briareum genus as synonymous, thus the name Briareum violacea also shows up.. The Pachyclavularia genus may eventually be reclassified as a member of the Briareidae family, yet there appear to be important differences.
The Pachyclavularia is generally distinguished by a brighter purple to reddish color mat and very green, yellow or light green tentacles, while the Briareum species generally have a brown or tan base. Unlike the Pachyclavularia genus, the Briareum species can shed a mucus 'sheet' and they also form upright finger-like protrusions from their base while the Pachyclavularia species can only seem to create folds in the mat. So it remains to be seen what scientific classification will ultimately be deternined as correct for the Green Star Polyps.
Where Pachyclavularia Corals Are Found: The Pachyclavularia genus are found in the Indo-Pacific oceans.
Pachyclavularia Coral Habitat: The Pachyclavularia genus are found along upper reef edges and lagoons, in shallow waters to moderate depths. They are most common on inshore reefs and reef flats where there is a more moderate water flow.
Status
The Pachyclavularia genus is not on the IUCN Red List for Endangered Species.
Description
What do Pachyclavularia Corals look like: The Green Star Polyps Pachyclavularia violacea is an encrusting mat-like coral.
Green Star Polyps form flat stolons, or mats, that are quite irregularly layered and rubbery feeling. The stolon is connected forming a mesh-like structure, with all the polyps being housed in tubular calyces.
The popular Green Star Polyps has a bright purple to reddish colored mat and very green, yellow, or light green tentacles. There are 8 bold tentacles to a polyp that are thin and smooth. The tentacles surround a center opening, or mouth, that is often another contrasting color. Other color morphs include those with brown, white, or yellow polyps. Besides the Green Star Polyps, the Brown Star Polyps shown here is one of the most common color forms.
The polyps are generally expanded unless an outside stimuli disturbs them, then they can retract fully. They are aggressive and can cover over other corals, but are also at risk of being stung. Other nearby corals with potent stings may prevent them from expanding their polyps. They can grow about 1" (2.54 cm) per month in optimal conditions.
Difficulty of Care
Soft Coral Care: The Green Star Polyps P. violacea is very easy to care for and the only requirement is moderate to strong turbulent water flow to remove detritus, and helps with optimal polyp expansion. Most light is acceptable, and providing actinic lighting can bring out any iridescent colors. Metal halides may be too strong, which will be evident it the coral color becomes pale or bleached out.
The Green Star Polyps are fast spreading, aggressive, and adaptable to all areas of the aquarium. This hardy growth can be a bonus when used as a decorative cover for particular areas in the tank. Otherwise, It may be helpful to keep the colony on a rock that isn't connected to any of the rock work, or they may spread and take over some corals.
Foods / Feeding
Soft Coral Feeding: In the wild, Pachyclavularia corals have developed several feeding strategies. They can absorb dissolved organic matter from the water column, and have a symbiotic relationship with a marine algae known as zooxanthellae, where they also receive some of their nutrients.
In captivity, the Green Star Polyps have not been observed actively feeding. Rather they will use light and their zooxanthellae for a food source, and will absorb micro particles from the water.
Aquarium Care
Stable tank conditions are needed to keep the Pachyclavularia genus. Doing water changes of 20% a month or 10% biweekly is needed, although it is suggested that doing 5% water changes once a week will replenish many of the needed additives. Calcium and other trace elements can be added to maintain proper levels for good growth.
There are some cautions to be aware of with additves. Their have been reports of the Pachyclavularia genus having an adverse reaction to some iodine additions, "...specifically in the form of Lugol's solution" (Eric Borneman). They can also be sensitive to the aluninum oxide in some phosphate removing sponges.
Suggested levels for Pachyclavularia species are:
Calcium: 400 - 450 ppm
Alkalinity: 3.2 - 4.8 MEQ/L (8 to 11 dKh - 10 is recommended)
Phosphates: 0, zero.
Magnesium: 1200 - 1350 ppm. (Magnesium makes calcium available, so if your calcium is low, check your magnesium levels before adding any more calcium.)
Strontium: 8 - 10
Aquarium Parameters
Quick Reference Chart
Lighting:
Water Flow:
Temperament:
A typical live rock/reef environment is what is needed for your Green Star Polyps, along with some fish for organic matter production. The P. violacea will rapidly spread, so It may be helpful to keep the colony on a rock that isn't connected to any of the rock work, or they may spread and take over some corals
Provide proper lighting and water movement. They are adaptable to most lighting, but metal halides may be too strong, which will be evident it the coral color becomes pale or bleached out. Providing actinic lighting can bring out any iridescent colors. A good water flow is essential, not only to remove detritus but also helps with optimal polyp expansion. This is an aggressive species that will quickly cover other corals and even itself.
Minimum Tank Size / Length: 50 gallon (190 L) or larger
Marine Lighting: Moderate to high
Temperature: 72° - 83° F (22° - 28° C)
Salinity / Specific Gravity: 1.023 - 1.025
Water Movement: Moderate and turbid
Water Region: All areas of the aquarium
Compatibility and Social Behaviors
The Green Star Polyps is very aggressive in that it will grow over other corals and even itself, so containment is essential. Isolating them with sand, away from the main rock can help, as well as regular fragging. They can be put on the sand, away from the main rock work and they will stay put. Putting it among the rock work will encourage growth onto the rocks and then over other corals.
Though they are aggressive and can quickly cover over other corals, they are also at risk of being stung. Other nearby corals with potent stings may prevent them from expanding their polyps.
Sex - Sexual differences
No sexual difference in appearance is known.
Breeding and Reproduction
The Pachyclavularia genus will form daughter polyps from the edge of their mat. Some species will form planulae with their young brooding on the surface of the colony.
Propagation is easy, simply cut off pieces of a mat and glue them, or better yet, rubber band them to a rock or plug. You can also train them to spread onto rubble that can be easily snipped apart as needed. In sheet form they can be adhered to all sorts of surfaces like the aquarium glass and overflows, to create a living decorative cover.
Potential Problems
The Pachyclavularia genus is hardy and very easy to care for. However they are susceptible to detritus collecting, filamentous algae and slime algae, and even aiptasia anemones growing in-between their stalks. They need water that is at least moderate and turbulent enough to keep them blown them off on a regular basis. These pests may have to be scrubbed off of the calyces and stolon mat on occasion, for the health of the colony, possibly for its survival in extreme cases. Sometimes infested areas may have to be cut off and then siphon or scrap the remaining coral. Healthy tissue should soon regrow.
Availability
Soft Corals for Sale: The Green Star Polyps P. violacea is easy to find at pet shops and on line. Online they can run about $10.00 USD and up, depending on size and/or color..
Greg - 2018-09-08 I had a large rock full of polyps up until 3 months ago My nitrates rose very high (magenta colored), probably from over feeding. They have not opened in several weeks now. There is still the purple color on the rock, which I’ve been told is a sign that there is still life. Any advice would be highly appreciated
Dustin Franckey - 2006-09-07 I bought a small piece of green star with about 10 polyps on it. I bought it about a month and a half ago and now I have almost doubled the amount of polyps and it's already starting to encrust the rock I put it on. Gave me confidence as this is my 1st addition for my reef tank.