ok, this might be a long one... Basically it's all about polyp size for the most part.
Zoanthids with the smaller polyps are generally from the Solomon Islands, such as tubs blues, spiderman blues, asterina pinks, zombie eyes, rastas, etc... Most blue zoanthids tend to come in from the Solomons, and the green center pink palys come from there as well. The "newly discovered" fizzy lizzies are dime a dozen from the Solomons. Most of the zoanthids from there have crazy colors when they come in and those end up getting more boring in captivity, so if all the zoanthid name scammers let their zoas settle in for 6 months you wouldn't see that many different morphs.
Case in point, these aren't from the Solomons, but these are eagle eyes
http://www.zoaid.com/index.php?module=Gallery2&g2_itemId=10516
There's a sucker born every minute and that sucker probably paid like $50 a polyp for eagle eyes.
Solomon Islands also has raspberry limeades, eclipse yellow (recently renamed dragonball z's by yet another scammer), fire and ice, and eye of rah. Those are the ones that come wrapped in newspapers.
Zoanthids from Fiji are pretty large, these include eagle eyes, dragon eyes, orange bam bams, creamsicles, etc... The Solomons have eagle eyes too, but the polyps are a bit different and smaller.
Zoanthids from Vietnam more often than not are radioactive dragon eyes and wham'n watermelons. Those are the big colonies you see on birdsnest skeletons. Jokers can come in from Vietnam too.
Indonesia has of kedd reds, most of the metallic palys like my bloody valentines, aog's, blue palys, utter chaos, etc... Indo and Vietnam are where the "deepwater Japanese" zoanthids come from, and by "deepwater Japanese" they mean "shallow dirty water." Most of the time those crap out in transit, and it's because the water they come from is so crappy that the rocks have too many absorbed nutrients and bacteria go crazy in the shipping bags. "Ice bergs" also come from there (picked a name at random from the literally 20+ different names for those on zoaid), and those have been rebranded 5-6 times in the last few months.
Aussie zoanthids are usually two tone and boring, I was going to find pictures on zoaid, but by page three I wanted to throw up after seeing basically the same 6 zoanthids named 47 different times.
