Like the OZ-08MMS Cancer, the Pisces can switch between two modes. Its submarine mode is for high speed movements underwater, while its mobile suit mode is more humanoid than the Cancer's with stubby legs. The suit's propellers in submarine mode can be used as claws in its mobile suit mode, and they contain small, extendable manipulators for delicate operations. The Pisces's primary weapons are torpedoes fired from its shoulder-mounted torpedo launchers, which can be used for underwater attacks and to bombard coastal targets after the suit partially surface in mobile suit mode. It can also use depth charges to destroy enemy ships, and has a searchlight on each shoulder for underwater search operations.