Euprymna berryi - Bobtail squid This little cuttlefish size varies according to the sex; males are no bigger than 3 centimetres (1.2 in) while the female reaches 5 centimetres (2.0 in) length.[4] The global body aspect is compact and rounded. It possesses eight arms and two tentacles, a pair of small lateral fins on the posterior part of the mantle. The background color of the body is translucent with a large number of tiny dark chromatophores as we see it, is like a blend of small dark, electric blue and green dots.