dark purple hadonni at extremecorals

slk55r

New member
I had scott special order me a blue haddoni and he got this purple one at the same time.

Its a shame my tank can't fit both!
 
If it is this one I don't think it is a Haddoni, leaning towards a Gig. At the bottom right of the picture you can sort of see the underside of the oral disc, there appears to be some Verrucae which aren't all that visible on Haddonis.
 
What sized tank do you have?? Thats a pretty nice anemone!

120g so I can't get 3 carpets !!! The red one is still very small but the blue one will take up the whole center of the tank I believe. I have a picture of the blue one which I don't see any verrucae on the underside.

Regarding the purple one, don't some haddonis also show some verrucae? Also looking at the rest of the underside in that same pic there doesn't seem to be much verrucae there. Its primarily that one section.

Todd how else can you differentiate between the two?


STICHODACTYLA GIGANTEA (FORSSKÄL, 1775)

Gigantic Sea Anemone

Original description As Priapus giganteus, from specimens collected in the Red Sea

Other names previously used include Discosoma giganteum (by Gohar 1948, Schlichter 1968), Stoichactis kenti (by Mariscal 1969, 1970, 1972; Allen 1972, 1973, 1978; Uchida et al. 1975)

Diagnostic field characters Deeply-folded oral disc (more pronounced with size), covered with short (average 10 mm), slightly tapering tentacles that typically all vibrate constantly. Tentacles extremely sticky in life, adhering to collector's hand, and pulling off in clumps; but do not cause stinging sensation. Typically in such shallow water that animals may be exposed at low tide.

Details May be extraordinarily abundant. Oral disc rarely as much as 500 mm diameter, usually lies at surface of sand, often among corals; pedal disc attached to buried object. Non-adhesive verrucae on upper column blue to maroon, contrasting with yellowish, pinkish, tan, greenish-blue, or gray-green column. Basal portion of each tentacle colour of the oral disc (often tan or pink); colour of bluntly pointed distal part -- which is what is generally noted as tentacle colour -- commonly brown or greenish, rarely a striking purple or pink, deep blue, or bright green. Much of central oral disc bare, but deep oral disc folds may hide mouth.

Similar species The shallow, sandy habitat is unusual. Stichodactyla mertensii, which lives on hard substrata, has a flat oral disc and distinctive column. Stichodactyla haddoni typically lives in cleaner sand and deeper water, and its oral disc folds are more regular and more separate than those of S. gigantea; tentacle form and fish symbionts of the two also clearly separate them.

Distribution Micronesia to the Red Sea, and Australia to the Ryukyu Islands

Fish A. akindynos, A. bicinctus, A. clarkii, A. ocellaris, A. percula, A. perideraion, A. rubrocinctus

STICHODACTYLA HADDONI (SAVILLE-KENT, 1893)

Haddon's Sea Anemone

Original description As Discosoma haddoni, from specimens collected on the northern Great Barrier Reef

Other names previously used include Stoichactis kenti (by Friese 1972, Moyer and Sawyers 1973), S. gigantea (by Friese 1972), S. haddoni (by Uchida et al. 1975, Moyer 1976, Moyer and Steene 1979).

Diagnostic field characters Slightly to deeply folded oral disc lies on or above sand surface; tentacles either bulbous or with basal "stalk," at the end of which is a blunt or swollen terminal portion that can appear puckered (on close examination). Exocoelic tentacles more robust than the endocoelic ones with which they alternate. Column sturdy.

Details Oral disc diameter commonly 500 mm, rarely 800 mm; yellowish to orange tentacle-free oral area 10-20 mm in diameter. Oral disc, lower portion of tentacles, and column drab -- commonly yellowish or tan. Tentacle ends can be green, yellow, gray, or rarely pink, which can give oral disc a variegated appearance. Exocoelic tentacles usually white, may be up to twice as long as endocoelic, point outward in well expanded animals. Tentacles sticky to touch, may adhere to human skin so strongly that they pull off the anemone; contact with them is painless but can raise welts. Small, non-adhesive verrucae on uppermost column are same colour as column or light rose to purple. Anemone can pull rapidly and completely beneath the sand when disturbed, leaving its fish to hover over the resulting depression.

Similar species Stichodactyla gigantea also lives in sand but typically in shallower water, and folds of its oral disc are less regular and more closely spaced. The oral disc of S. mertensii, which lives on firm substrata, lies fairly flat. The column of S. haddoni is more substantial than that of either, and its tentacles are longer and distinctively shaped. The other species lack robust exocoelic tentacles. Tentacles pull off of S. gigantea as well, but in massive clumps rather than one or several at a time.

Distribution Fiji Islands to Mauritius, and Australia to the Ryukyu Islands

Fish A. akindynos, A. chrysogaster, A. chrysopterus, A. clarkii, A. polymnus, A. sebae
 
I've always considered tentacle length to be the best distinguishing factor between the two species, and verrucae second.
 
id by verrucae

id by verrucae

I know but the descriptions I posted above state that both haddoni and gigantea can have verrucae.
 
length of tentacles

length of tentacles

I've always considered tentacle length to be the best distinguishing factor between the two species, and verrucae second.

If so, looking at the purple one, the tentacles seems pretty short.
 
I know but the descriptions I posted above state that both haddoni and gigantea can have verrucae.

None of the Haddonis I have ever kept have had any truly visible verrucae.

Here is the underside of one of mine, pretty smooth.

PurplerimHaddoni.jpg
 
the two species verrucae are not similar looking. (See pictures in RC Anemone FAQ stickied at top of forum.)

PERHAPS you have a gigantea ;)

Don't think so. My red one has no visable verrucae on the underside.

Todd,
yours looks like it does have verrucae just that its the same color. I see little round spots.


I'm just trying to better understand the differences. I want to make sure I don't end up with a gigantea and a haddoni in the same tank.
 
thanks.

Haddon's anemone does have verrucae but (usually) they're the same color as the column and sometimes they're barely visible (raised).
 
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