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Discosoma nummiforme Ruppel et Leuckart, 1828

(photos of Karen Sanamyan, aquarium, specimens from Indonesia)
   
Discosoma nummiforme

Discosoma nummiforme

This very popular among marine aquarium hobbyists species comes with many colour forms. It has disc with smooth margin (no marginal tentacles) and few small wart-like tentacles arranged radially on the disc. It attributed usually to Discosoma nummiforme - a type species of genus Discosoma originally described from the Red Sea. We cannot say if this name correctly applied to Indonesian species - the original description of D. nummiforme is short and original figures are too schematic. Den Hartog (1980) examined type specimens but failed to give any redescription, he said only that the discal tentacles are principally dendritic (=branching?) and mentioned marginal tentacles. We do not observed any marginal tentacles in Discosoma spp. although margin of the disk may have slight and not prominent crenulations. And discal tentacles do not appear to be dendritic. Also Den Hartog observed thickened radial ridges on the disk - are these a result of fixation? Anyway, it would be very interesting to compare living specimens from the Red Sea with Pacific specimens, so if you have any (preferably good) photos of living Discosoma (or related Rhodactis) species from the Red Sea, please, drop us a message.
Taxonomic position:
Phylum: Cnidaria
Class: Anthozoa
Subclass: Hexacorallia
Superorder: Hexactiniida
Order: Corallimorpharia

Family: Discosomatidae

Species: Discosoma nummiforme Ruppel, Leuckart, 1828

Species list of sea anemones:
  • Acricoactis brachyacontis
  • Actinernus michaelsarsi
  • Actinia equina
  • Actinodendron sp
  • Actinostella bradleyi
  • Actinostephanus haeckeli
  • Actinostola chilensis
  • Actinothoe sphyrodeta
  • Adamsia palliata
  • Aiptasia couchii
  • Aiptasia mutabilis
  • Alicia mirabilis
  • Alicia sansibarensis
  • Allantactis parasitica
  • Amplexidiscus fenestrafer
  • Andresia parthenopea
  • Anemonia alicemartinae
  • Anemonia viridis
  • Antholoba achates
  • Anthopleura elegantissima
  • Anthopleura hermaphroditica
  • Anthopleura orientalis
  • Anthopleura sola
  • Anthopleura xanthogrammica
  • Anthothoe chilensis
  • Armactinia antarctica
  • Artemidactis victrix
  • Aulactinia vancouverensis
  • Aulactinia vladimiri
  • Bathyphellia margaritacea
  • Boloceroides mcmurrichi
  • Boloceropsis platei
  • Calliactis polypus
  • Cereus herpetodes
  • Cereus pedunculatus
  • Cerianthus lloydii
  • Charisea saxicola
  • Cnidopus japonicus
  • Condylactis aurantiaca
  • Condylactis gigantea
  • Corallimorphus karinae
  • Corallimorphus pilatus
  • Corynactis californica
  • Corynactis carnea
  • Corynactis viridis
  • Cribrinopsis albopunctata
  • Cribrinopsis crassa
  • Cribrinopsis olegi
  • Cryptodendrum adhaesivum
  • Dactylanthus antarcticus
  • Diadumene lineata
  • Discosoma nummiforme
  • Dofleinia armata
  • Edwardsia inachi
  • Entacmaea quadricolor
  • Epiactis prolifera
  • Epizoanthus couchii
  • Epizoanthus fiordicus
  • Glyphoperidium bursa
  • Gonactinia prolifera
  • Gyractis octoradiata
  • Gyractis verrucosa
  • Halcampa arctica
  • Halcampoides sp
  • Halcampoides mediterranea
  • Halcurias pilatus
  • Heteractis aurora
  • Heterodactyla hemprichii
  • Hormathia lacunifera
  • Hormathia nodosa
  • Hormathia pacifica
  • Hormathia pectinata
  • Hormosoma scotti
  • Isaurus tuberculatus
  • Isoparactis fabiani
  • Isoparactis fionae
  • Isosicyonis alba
  • Korsaranthus natalensis
  • Liponema brevicornis
  • Macrodactyla doreensis
  • Megalactis griffithsi
  • Mesozoanthus fossii
  • Metridium farcimen
  • Metridium lobatum
  • Metridium senile
  • Metridium senile fimbriatum
  • Nemanthus sp
  • Oulactis concinnata
  • Pachycerianthus multiplicatus
  • Pachycerianthus solitarius
  • Paracondylactis sinensis
  • Paracorynactis hoplites
  • Paraisanthus tamarae
  • Paranthus niveus
  • Parazoanthus anguicomus
  • Parazoanthus axinellae
  • Parazoanthus elongatus
  • Peachia cylindrica
  • Phellia exlex
  • Phelliactis callicyclus
  • Phyllodiscus semoni
  • Phymactis papillosa
  • Phymanthea pluvia
  • Phymanthus crucifer
  • Phymanthus species
  • Protanthea simplex
  • Protopalythoa mutuki
  • Pseudocorynactis caribbeorum
  • Ptychodactis aleutiensis
  • Ptychodactis patula
  • Radianthus crispa
  • Radianthus magnifica
  • Radianthus malu
  • Rhodactis inchoata
  • Rhodactis indosinensis
  • Ricordea yuma
  • Sagartia elegans
  • Sicyonis heliodiscus
  • Spongiactis japonica
  • Stichodactyla gigantea
  • Stichodactyla haddoni
  • Stichodactyla tapetum
  • Stomphia coccinea
  • Telmatactis sp
  • Triactis producta
  • Urticina clandestina
  • Urticina columbiana
  • Urticina crassicornis
  • Urticina eques
  • Urticina felina
  • Urticina grebelnyi
  • Urticina kurila
  • Urticina mcpeaki
  • Verrillactis paguri

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