出典:Wikipedia
出典:『Wikipedia』 (2010/11/08 03:51 UTC 版)
Fire squid are species belonging to the family Pyroteuthidae. The family comprises two genera. Species are diurnally mesopelagic, however migrate into surface waters during the night. The family is characterised by the tentacles, which have a permanent constriction and bend near the base; and photophores occurring on the tentacles, eyeballs and viscera. Members reach mantle lengths of 23-50 mm. Paralavae of the family are common around the Hawaiian Islands, with up to 17% of collected specimens in the area belonging to Pyroteuthidae.