Japanese flying squid

Marine cephalopod mollusc with mantle slender, muscular. Fins sagittate, relatively short, length about 40 to 45% of mantle length. Funnel groove where tint is ejected with foveola, no side pockets. Tentacular club expanded, robust, long. Arms relatively short; arm sucker rings smooth proximally, toothed with about 10 to 14 graded, sharp teeth distally; right arm IV hectocotylized in distal third with suckers and stalks modified into low, conical papillae and comb-like protective membrane. Maximum mantle length 50 cm.