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Megalocranchia fisheri : ウィキペディア英語版 | 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 and a total length of over ,〔Norman, M. 2000. ''Cephalopods: A World Guide''. Hackenheim, ConchBooks, p. 158.〕 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==
*Cephalopod size
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