The yellow boxfish (Ostracion cubicum) is a species of boxfish found in reefs throughout the Pacific Ocean and Indian Ocean as well as the southeastern Atlantic Ocean. Recorded occasionally since 2011 in the Levantine waters of the Mediterranean Sea which it likely entered via the Suez Canal, it is a species appreciated in the aquarium trade. O. cubicum reaches a maximum length of 45 centimetres (18 in). As the name suggests, it is box-shaped. Boxfish are also known for their armored and rigid body which in most cases would inhibit locomotion. This disadvantage is offset by the boxfishs carapace shape which is much more advantageous for its adapted style of swimming, known as ostraciiform locomotion. When juvenile, it is bright yellow in color. As it ages, the brightness fades and very old specimens have blue-grey to black coloration with faded yellow. While they are mainly known to reside in Indian coasts, earlier records show that this species has earlier reports in the Lakshadweep Islands, Andaman & Nicobar Islands as well as the Chennai coast The diet consists mainly of marine algae, but it may also feed on worms,
