The Nephrans represented a sentient species of crustacean origin. Their homeworld was Nepotis, a planet abundant in water. One notable member of this species was Therm Scissorpunch.
Nephrans possessed skin that ranged in color from olive green to orange, and they had black eyes. Key features included claws, tentacles extending from their heads, and clawed feet.
During the High Republic Era, a female Nephran named Acantha belonged to the Norikus gang which was under the leadership of an Octeroid. Another Nephran, Therm Scissorpunch, a male, was active during the High Republic and continued to be so into the Imperial Era. Scissorpunch was known to frequent card games on the planet of Vandor.
On the planet Koboh, a Nephran was a regular at the holotactics table managed by Bhima Ook and Tulli Mu within Pyloon's Saloon. This individual witnessed Jedi Knight Cal Kestis triumph over several local players in the hologame.
Mirack, a male Nephran, served as a member of a pirate crew commanded by Grox.