Megalocranchia fisheri
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.
| Megalocranchia fisheri | |
|---|---|
 | |
| Juvenile Megalocranchia fisheri | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Order: | Oegopsida |
| Family: | Cranchiidae |
| Genus: | Megalocranchia |
| Species: | M. fisheri |
| Binomial name | |
| Megalocranchia fisheri | |
| Synonyms | |
|
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
References
- Barratt, I.; Allcock, L. (2014). "Megalocranchia fisheri". IUCN Red List of Threatened Species. 2014: e.T190923A1961094. doi:10.2305/IUCN.UK.2014-1.RLTS.T190923A1961094.en. Downloaded on 01 March 2018.
- 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.
External links
Further reading
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.