sagouja Share definition Flag A type of make-believe semi-aquatic fish that was made up by a kid. It has two tentacles, a crab claws, and four legs. It can be any color if you truly believe. that kid brought his pet sagouja to school today, on a leash. sagouja by Sagouja April 9, 2011 0 0 Get merch Get the sagouja mug. Buy Now — $32.95 See more merch