Besides Galactic Basic Standard, the primary mode of communication for the Baragwin species was Baragwinian, their own language.
Despite this, the Baragwin did not particularly care for their own tongue. The majority opted to learn Basic or the local languages of their birth planet, resulting in Baragwinian's relative obscurity. Nevertheless, Baragwinian held value as a trade language.
In contrast to what is portrayed in Scoundrel's Wages, Ultimate Alien Anthology asserts that a Baragwinian language does not exist natively, or at least that Baragwin characters typically only speak Basic.