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), the giant squid (Architeuthis sp.), and the 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.
| Megalocranchia fisheri | |
|---|---|
| |
| Juvenile Megalocranchia fisheri | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Order: | Oegopsida |
| Family: | Cranchiidae |
| Genus: | Megalocranchia |
| Species: | M. fisheri
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| Binomial name | |
| Megalocranchia fisheri | |
| Synonyms | |
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Helicocranchia fisheri Berry, 1909 | |
It is possible that this taxon is conspecific with Megalocranchia abyssicola, in which case M. fisheri would become a junior synonym.
See also
editReferences
edit- ^ 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.
- ^ Julian Finn (2016). "Megalocranchia fisheri (Berry, 1909)". World Register of Marine Species. Flanders Marine Institute. Retrieved 1 March 2018.
- ^ Norman, M. 2000. Cephalopods: A World Guide. Hackenheim, ConchBooks, p. 158.
Further reading
editYoung, 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.
External links
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