The language of the Ssi-ruuk, hailing from the planet called Lwhekk, was known as Ssi-ruuvi. Due to anatomical differences, Humans were incapable of replicating this language, lacking the necessary physical structures.
Ssi-ruuvi consisted of a series of musical clicks and high-pitched whistles. Its sound, when articulated, bore a resemblance to a flute's melody, leading to the Ssi-ruuk being commonly referred to as "Fluties".
Ssi-ruuk rarely bothered to acquire proficiency in languages other than their own, typically relying on translation devices. Given Ssi-ruuvi's limited scope, only Ssi-ruuk translators achieved fluency in both Ssi-ruuvi and Basic.