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Octopus cyanea   Gray, 1849

Big blue octopus

Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Octopus cyanea  AquaMaps  Data sources: GBIF OBIS
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Image of Octopus cyanea (Big blue octopus)
Octopus cyanea
Picture by Harasti, David

Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Cephalopoda | Octopoda | Octopodidae | Octopodinae

Environment: milieu / climate zone / depth range / distribution range Ecology

Reef-associated; depth range 0 - 150 m (Ref. 113260).  Tropical; 33°N - 36°S, 30°E - 134°W (Ref. 275)

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Indo-Pacific: from eastern Africa to Hawaiian Islands.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?, range 8 - ? cm Max length : 22.0 cm ML male/unsexed; (Ref. 122030); max. published weight: 6.0 kg (Ref. 81543)

Biology     Glossary (e.g. epibenthic)

Shallow-water benthic species inhabiting coral reefs and found in a variety of substrata (Ref. 81543). Occupies lairs in coral bedrock, live and dead coral heads and excavations in sand and rubble (Ref. 96968). In naturally-occurring holes on rocks or dens (Ref. 81543). Males and females can occupy adjacent dens (Ref. 96968). Juveniles rapidly form homes and defend these against conspecifics (Ref. 105171). Opportunistic predator that predominantly uses tactile foraging methods (Ref. 81543). Reported to pounce and capture crabs. Another feeding strategy involves speculative hunting where an individual uses its interbrachial web to cover and explore with the tips of its arms the coral heads, rocks or clumps of algae (Ref. 105172). Feeds primarily on bivalves, gastropods and xanthid crabs. Employs crypsis in reaction to threat (Ref. 81543). Exhibits diurnal activity (Ref. 105171). Day-active species with higher activity peaks at dusk and dawn (Ref. 96968).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Members of the class Cephalopoda are gonochoric. Male and female adults usually die shortly after spawning and brooding, respectively. Mating behavior: Males perform various displays to attract potential females for copulation. During copulation, male grasp the female and inserts the hectocotylus into the female's mantle cavity where fertilization usually occurs. Life cycle: Embryos hatch into planktonic stage and live for some time before they grow larger and take up a benthic existence as adults.

Main reference References | Coordinator | Collaborators

Roper, C.F.E., M.J. Sweeney and C.E. Nauen. 1984. (Ref. 275)

IUCN Red List Status (Ref. 127697)

  Least Concern (LC) ; Date assessed: 08 April 2014

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses

Fisheries: commercial
| FishSource | Sea Around Us


More information

FAO areas
Food items
Mass conversion

Internet sources

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, Search) | Zoological Record

Estimates of some properties based on models

Preferred temperature (Ref. 115969): 24.7 - 29.1, mean 28.1 (based on 1652 cells).
Prior r = 0.49, 95% CL = 0.33 - 0.74, Based on 2 stock assessments.
Vulnerability (Ref. 71543): High to very high vulnerability (72 of 100).
Price category (Ref. 80766): Low.