Megalocranchia fisheri

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Megalocranchia fisheri
Juvenile Megalocranchia fisheri
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Oegopsida
Family: Cranchiidae
Genus: Megalocranchia
M. fisheri
Binomial name
Megalocranchia fisheri
(Berry, 1909)[2]

Helicocranchia fisheri Berry, 1909

Megalocranchia fisheri is a species of glass squid. Its natural range covers at least the waters off Hawaii. The species may attain a mantle length of 1.8 m (5.9 ft) and a total length of over 2.7 m (8.9 ft),[3] making it one of the largest species of squid, together with the colossal squid (Mesonychoteuthis hamiltoni), giant squid (Architeuthis sp.), and robust clubhook squid (Onykia robusta). It inhabits surface and mid-depth waters of open ocean. Juveniles live near the surface, while adults occupy mesopelagic depths during the day and migrate to near-surface waters at night. M. fisheri possesses two large light organs in the gill cavity. Females additionally have light organs on the ends of their third arm pair. As the animal matures, its fins become spear-like in appearance.

It is possible that this taxon is conspecific with Megalocranchia abyssicola, in which case M. fisheri would become a junior synonym.

See also[edit]


  1. ^ Allcock, L.; Barratt, I. (2014). "Megalocranchia fisheri". IUCN Red List of Threatened Species. 2014: e.T190923A1961094. doi:10.2305/IUCN.UK.2014-1.RLTS.T190923A1961094.en. Retrieved 19 November 2021.
  2. ^ Julian Finn (2016). "Megalocranchia fisheri (Berry, 1909)". World Register of Marine Species. Flanders Marine Institute. Retrieved 1 March 2018.
  3. ^ Norman, M. 2000. Cephalopods: A World Guide. Hackenheim, ConchBooks, p. 158.

External links[edit]

Further reading[edit]

Young, R. E.; Roper, C. F. E.; Mangold, K. (July 1979). "Luminescence from non-bioluminescent tissues in oceanic cephalopods". Marine Biology. 53 (1): 69–77. doi:10.1007/BF00386530. S2CID 85005638.