Zoanthids
Renaming Our Corals
"Zoanthid, Notice that this word
contains only a single "o." A
zoo is a place where animals are
kept on display, whereas
zo-(rhymes with toe) is a prefix
meaning "animal." This is a
simple point, but I can't
overstate how it grates on the
ears of folks who know better.
My advice in any endeavor would
be to know the correct
pronunciations of its words;
otherwise we seem less-informed
than we truly are."
"geekdafied" - 3Reef

Zoanthid Names
(zoaid.com)
Class: Anthozoa
Subclass: Zoantharia
Order: Zoanthidea
Family: Zoanthidae
Genus: Zoanthus, Palythoa,
Protopalythoa, Isaurus, Sphenopus,
Parazoanthus, Epizoanthus,
Acrozoanthus
common species: Z. sociatus,
pulchellus, pacificus, mantoni.
vietnamensis, coppingeri, and others
P. grandis, caribaeorum, complanata,
variabilis, grandiflora, mammillosa,
toxica, and others P. mutuki, and
others P. swiftii, parasiticus,
axinellae, gracilis, dichroicus, and
others I. tuberculatus, and others
S. marsupialis, and others
Common names: sea mats, button
polyps, colonial polyps, colonial
anemones
Zoanthids (order Zoantharia) are an
order of cnidarians commonly found
in coral reefs, the deep sea, and
many other marine environments
around the world. These animals come
in a variety of different colonizing
formations and in numerous colors.
They can be found as individual
polyps, attached by a fleshy stolon
or a mat that can be created from
small pieces of sediment, sand and
rock. The term "zoanthid" refers to
all animals within this order
Zoantharia, and should not be
confused with "Zoanthus", which is
one genus within Zoantharia.
Zoanthids can be distinguished from
other colonial anthozoans and soft
coral by their characteristic of
incorporating sand and other small
pieces of material into their tissue
to help make their structure. All
known zoanthids have this unique
feature, excepting the Family
Zoanthidae. While the most
well-known zoanthids are the
zooxanthellate genera found in
tropical and sub-tropical waters
(primarily Zoanthus and Palythoa),
many other species and genera exist,
some still relatively unknown to
science.
Wikipedia
Zoanthids feed both by
photosynthesis, aided by the
zooxanthellae they contain, and by
capturing plankton and particulate
matter. Although photosynthesis aids
in their nutrition, even species
that do not actively capture
plankton cannot live through
photosynthesis alone.[1] Zoanthis
can eat meaty foods, such as
lancefish, brine shrimp, krill and
bloodworms.
Wikipedia


Palytoxin is an incredibly complex
marine natural product containing 71
stereochemical elements. Palytoxin,
isolated from soft coral (most
notably, zoanthids), is considered
to be one of the most toxic
non-peptide substances known, second
only to Maitotoxin.
Typical symptoms of palytoxin
poisoning are angina-like chest
pains, asthma-like breathing
difficulties, tachycardia, unstable
blood pressure, hemolysis
(destruction of red blood cells),
and an electrocardiogram showing an
exaggerated T wave. The onset of
symptoms is rapid, and death usually
follows just minutes after.

Always wear gloves and
protective glasses when handling
these creatures!"
The Frugal Reefer (GARF)
Zoanthid Production (GARF)
Zoanthids are a great beginners
coral. They are easy to propagate.
These corals grow very well in new
aquariums and they come in a wide
range of colors. There are many
varieties of Zoanthids. During our
research at GARF we have brought
many Zoanthids from the wild reef
and each group has taken several
months to acclimate to captivity.
During the first few months the wild
colony does not grow very fast.
After a period of about six months
we notice that the individual
Zoanthids start to reproduce and the
colony starts to spread.
Misc Info
("Animal World")
In nature zoanthids are often
found in turbid, high-nitrate areas
in canals, harbors, intertidal areas
and reefs. For this reason they are
fairly tolerant of poor water
quality high nitrates, phosphates an
dissolved organics. They will not
however do well if filamentous algae
is allowed to grow as they can be
smothered.
Compatibility: When it comes to
placing zoanthids next to
corallimorphs, (mushroom anemones),
the zoanthids almost always lose.
Always place these kinds of corals a
good distance away from each other.
One should also be aware that there
are several fish species that will
dine on zoanthids. These fish
include the Raccoon Butterflyfish,
Chaetodon lunula, which have been
used recently to eat aiptasias
04-07-2008 12:50 PM
(Re: 3Reef Thread - "Help with Polyps" )
(3Reef Thread: Help With Polyps)
25 Reasons why your polyps won't expand.
1. You have a zoanthid eating worm.
2. Sundial snails. ( I've experienced this ) Zoo eating snails.
3. A fish that is nipping at them, there are several well documented cases of this. ( I've experienced this )
4. An invert doing the same. ( I've experienced this )
5. Unstable or fluctuating parameters.
6. Large Emerald Crabs or a Sally Lightfoot. Both can and will
consume, kill and cause polyp retraction. ( I've experienced this )
7. Sea Spiders. ( I've experienced this )
8. If shipped, the water was much too cold and you placed it directly into your tank without slowly drip acclimating them. Or, the inverse, the water was too warm.
9. Nudibranchs ( I've experienced this )
10. Stray Voltage. ( I've experienced this )
11. Excessively high Iodine which would prove fatal.
12. Light shock
13. Polyps that were kept in PC or VHOs and then placed mid to high level under MH's without light acclimating them. Possible burning could also occur.
or
Polyps that were in maybe dual 175 SE Mh and then placed mid to high under 400 watt DE MH, will cause possible burning or a delayed expansion.
14. Other stinging corals.
15. Chemical warfare.
16. Overpowering current. ( I've experienced this )
17. Excessive collection of sediment. See post 1, 6 and 7 in the link below.
18. Nuisance algae around the polyps which will irritate them and prevent them from expanding. ( I've experienced this )
19. Temperamental, yes, they are, there may be nothing at all wrong, that simply don’t want to expand for that day.
20. Fungus
21. Bacterial infection. ( I've experienced this )
22. White lesions also referred to as Zoa Pox. ( I've experienced this )
23. Amphipods, which I have only witnessed eating sick, dead, dying, decaying polyps. Doesn’t mean they won’t eat perfectly healthy ones, I just haven’t witnessed it, some have.
24. Extreme hypo or hyper salinity
25. And the final reason may not be any of the reasons above. Why? Periodically, polyps will retract from days to 10 to 14 days, during which they will clean themselves externally. Then without any advanced notice, they will unfold like a flower or a summer’s morning.
(Zoanthid Predators, Irritaters, & Diseases)
PS. There are proactive measures that one can take to prevent or greatly reduce your chances of experiencing the above. Most notably...
1. Dipping
2. Close inspection
3. Quarantine your new purchases
4. Educating yourself on what to look for and recognize. I think a lack of knowledge is the one major contributors to most unfortunate experiences in reefing.



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References:
The Sea Mats & Polyps That Are
the Zoanthids - Webmedia
Zoanthid - Wikipedia
Zoanthids, Palythoa -
Animal-World
Zoanthids Coral? Anemone? Both?
Neither? by Eric Borneman
ZoaID.com! :: The definitive
repository for named Zoanthids!
(Link provided by
Amcarrig - 3Reef)
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