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Old 05-07-2008, 07:58 PM   #1
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Another new acan frag

Ok, I freely admit that I have absolutely NO self -control when it comes to corals.

Another acanthastrea lordhowensis coral



But now all of you coral guru's out there.....I have a question. If both of these are acanthastrea lordhowensis, why are they so different? If you look at the top coral, it's polyps are all circular in shape but the bottom (red) one's polyps are not so well defined.....what's the deal?
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Old 05-07-2008, 10:40 PM   #2
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A better close up of the corals.....see what I mean? I swear they are different.



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Old 05-07-2008, 10:44 PM   #3
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That's not a frag.....that's a colony! They look great!
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Old 05-07-2008, 10:50 PM   #4
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Both of those are really nice. The one form today is extremely colorful, I like it a lot. Are they from DiversDen on Liveaquaria.com?
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Old 05-07-2008, 11:24 PM   #5
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Both of those are really nice. The one form today is extremely colorful, I like it a lot. Are they from DiversDen on Liveaquaria.com?
One I got at a lfs and the other bright red one is from the divers den section....I was really impressed with the shipping from those folks.

They have a good selection......if you buy them first, then there will be less for me! Whew!!
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Old 05-08-2008, 12:55 PM   #6
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Very nice Msbeanctr. Great looking coral.
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Old 05-08-2008, 01:56 PM   #7
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Those are really nice colonies. They make my single polyp frags looks dismal . I can't wait for the to grow...

You may want to check out the article Good Lordhowensis!! by Eric Borneman and Anthony Calfo...

"Acanthastrea is a relatively large genus in the family Mussidae, and contains 12-15 species. With the exception of A. maxima, all of them may be found in the areas where coral collection for the aquarium trade occurs. Acanthastrea species are not easy to distinguish from species in several other genera, and even families, of corals. They resemble other mussid corals, specifically Micromussa, Mussismilia, Symphyllia and Lobophyllia. They also resemble some of the many species in the family Faviidae that may be very difficult to tell apart....

In general, the mussids are corals characterized by large corallites with large teeth or lobes on their septa. The corallites generally have well developed columellae. In terms of knowing if a living specimen is a mussid, it is possible to see or gently feel the septa for the presence of these large and often serrated-looking teeth. If they are not present, it is quite possible that it is a faviid and not a mussid. But, actual identification requires examination of a skeleton devoid of tissue, and most mussids and faviids are covered with heavy tissue that nearly completely obscures their skeletons' diagnostic features.
If the coral is determined to be a mussid, species identification requires measuring its corallites across their diameter from wall to wall. Micromussa, which looks very much like some species of Acanthastrea, has corallites 8mm or less in diameter. Acanthastrea generally has corallites smaller than Lobophyllia, and most have corallites between 8-15mm in diameter. Several species, though, may have larger corallites and these are the ones most difficult to distinguish from Lobophyllia and Symphyllia."
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Old 05-08-2008, 02:29 PM   #8
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Those are really nice colonies. They make my single polyp frags looks dismal . I can't wait for the to grow...

You may want to check out the article Good Lordhowensis!! by Eric Borneman and Anthony Calfo...
Wow, that is a great article. Oh, and I'd gladly take those frags....they are really nice!
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Old 05-08-2008, 03:21 PM   #9
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They are already looknig better. Now I just have to be patient and wait fot them to grow. I hope I didn't place them too close to each other, but it will be fun fragging them later
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Old 05-08-2008, 11:59 PM   #10
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Cmor's article kind of hit on what I was wondering... are they the same species, or is the more "open" looking one (the one NOT from liveaquaria) really and for true an acan? It's coloration sure looks like one, but it really does seem more "open".

What I've noticed with my little colony as it's grown is that the new heads along the outside definitely seem to look a little different than the ones all crowded in towards the center. Looking at your pictures, I wonder if it might have to do with what constraints were on the coral where it was growing in the wild. I mean... if it was fairly well constrained and it didn't have room to spread, I can see where the polyps would pack themselves in pretty tight. But if they were in a place where they could spread out, it seems like they would so they could take advantage of more room to expand and collect light. So maybe the more open one was just from a location that had a lot of room to grow, and the other wasn't?

Just armchair marine biologist-ing.
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