Ah, I was thinking, "WTF does 'yay goy my festium back' mean?" until you posted the picture. The common name is derived from the now outdated name Cichlasoma festivum, now known as Mesonauga festivus:
i bougth one once and it simply desapeared... he was kinda small i was surprised he actually lasted for lika a month or so, since he's not that agressive and he was with a lot of agrassive fish eheheh