Bithnush was an Isitri alive during the mid-23rd century on Isitra Colony First.
In 2270, Bithnush was assigned as a communications expert when he informed Berlis that upgrades to the communications system had been finished. These upgrades detected a message from the Odib ambassador about a coming attack on the Isitri by the Odib war fleet. (TOS novel: Troublesome Minds)