Caryophyllia (Caryophyllia) arnoldi Arnold's stony coral

Caryophyllia (Caryophyllia) arnoldi is commonly referred to as Arnold's stony coral. Difficulty in the aquarium: Experts only! Very hard to keep. Toxicity: Toxic hazard unknown.

Paul Norwood, USA

Foto: Sitka, Alaska, USA

/ 06.03.2025 / Tiefe ca. 30 Meter
Courtesy of the author Paul Norwood, USA . Please visit www.inaturalist.org for more information.

Uploaded by AndiV.

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lexID:: 17486
AphiaID:: 0

Scientific:: Caryophyllia (Caryophyllia) arnoldi
German:: Arnolds Steinkoralle, Arnolds Becherkoralle
English:: Arnold's Stony Coral

Category:: Stony Corals LPS

Family tree:: Animalia (Kingdom) > Cnidaria (Phylum) > Hexacorallia (Class) > Scleractinia (Order) > Caryophylliidae (Family) > Caryophyllia (Genus) > (Caryophyllia) arnoldi (Species)
Initial determination:: Vaughan, 1900

Occurrence:: Aleutian Islands, Bering Sea, British Columbia, California, Canada Eastern Pacific, Eastern Pacific Ocean, Galapagos Islands, Gulf of Alaska (Pacific), Oregon, West Coast USA
Marine Zone:: Mesopelagial
Mesopelagic zone
lies between 200 to 1000 meters depth, thus it is considered the "twilight zone of the sea" between the light and dark depth zones.
Sea depth:: 17 - 2105 Meter
Habitats:: Reef walls, Rocky, hard seabeds
Size:: 1,7 cm
Temperature:: 1,89 °F - 8,3 °F (1,89°C - 8,3°C)
Food:: azooxanthellat, nonphotosynthetic, Brine Shrimp Nauplii, Brine Shrimps, Carnivore, Copepods, Crustaceans, Invertebrates, Marine snow, Mysis, Suspension feeder, Zooplankton
Difficulty:: Experts only! Very hard to keep
Offspring:: Not available as offspring
Toxicity:: Toxic hazard unknown

CITES:

Appendix II ((commercial trade possible after a safety assessment by the exporting country))

Red List:

Not evaluated (NE)

Related species at Catalog of Life:

Caryophyllia abrupta
Caryophyllia abyssorum
Caryophyllia alberti
Caryophyllia ambrosia
Caryophyllia antarctica
Caryophyllia antillarum
Caryophyllia arnoldi
Caryophyllia atlantica
Caryophyllia balaenacea
Caryophyllia barbadensis
Caryophyllia berteriana
Caryophyllia capensis
Caryophyllia cincticulatus
Caryophyllia cornulum
Caryophyllia corrugata
Caryophyllia crosnieri
Caryophyllia crypta
Caryophyllia decamera
Caryophyllia dentata
Caryophyllia diomedeae
Caryophyllia elongata
Caryophyllia eltaninae
Caryophyllia ephyala
Caryophyllia foresti
Caryophyllia grandis
Caryophyllia grayi
Caryophyllia hawaiiensis
Caryophyllia horologium
Caryophyllia jogashimaensis
Caryophyllia karubarica
Caryophyllia lamellifera
Caryophyllia mabahithi
Caryophyllia marmorea
Caryophyllia octonaria
Caryophyllia octopali
Caryophyllia paradoxus
Caryophyllia paucipalata
Caryophyllia pauciseptata
Caryophyllia perculta
Caryophyllia planilamellata
Caryophyllia polygona
Caryophyllia quadragenaria
Caryophyllia quangdongensis
Caryophyllia ralphae
Caryophyllia rugosa
Caryophyllia sarsiae
Caryophyllia scillaemorpha
Caryophyllia scobinosa
Caryophyllia secta
Caryophyllia seguenzae
Caryophyllia solida
Caryophyllia spinicarens
Caryophyllia spinigera
Caryophyllia squiresi
Caryophyllia stellula
Caryophyllia transversalis
Caryophyllia unicristata
Caryophyllia valdiviae
Caryophyllia zanzibarensis
Caryophyllia zopyros

More related species in this lexicon:

Author:: Meerwasser-Lexikon Team
Publisher:: Meerwasser-Lexikon.de
Created:: 2025-06-04 21:08:45
Last edit:: 2025-06-19 22:42:10

Info

Caryophyllia (Caryophyllia) arnoldi is a solitary, sessile, and azooxanthellate stony coral that colonizes hard substrates exclusively in cold to very cold and deep seas.
The deepest occurrence of Caryophyllia (Caryophyllia) arnoldi is at a documented depth of 2105 meters, see the link to: “British Columbia Corals: A Synopsis of Information on their Taxonomy, Occurrences, Distribution, Threats and General Status,” page 215.

The largest known specimen (Alb-4463) had a calyx measuring 16.0 x 14.5 mm, a height of 17.0 mm, and a stem diameter of 8.8 mm.

We would like to express our sincere thanks to Paul Norwood, USA, for his three photos of Caryophyllia (Caryophyllia) arnoldi, which he was able to photograph around Sitka, Alaska.

Synonym: Caryophyllia arnoldi Vaughan, 1900 · alternative representation

External links

A Field Guide to Alaskan Corals (en). Abgerufen am 04.06.2025.
British Columbia Corals: A Synopsis of Information on their Taxonomy, Occurrences, Distribution, Threats and General Status., Seite 214-216 (en). Abgerufen am 04.06.2025.
Common and scientific names of aquatic invertebrates from the United States and Canada: Cnidaria and Ctenophora. 2nd ed (en). Abgerufen am 04.06.2025.
Deep Benthic Coral Habitats of Glacier Bay National Park and Preserve, Alaska (en). Abgerufen am 04.06.2025.
Deep-Sea Coral Taxa in the Alaska Region: Depth and Geographical Distribution (v. 2020, Seite 3 (en). Abgerufen am 04.06.2025.
iNaturalist Seite Paul Norwood (en). Abgerufen am 19.06.2025.
Scleractinia of the Temperate North Pacific, Seite 19-20 (en). Abgerufen am 04.06.2025.

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