Amaranth of the Claw Shansheeth was a red-jewelled Shansheeth of the Claw Shansheeth of the 15th Funeral Fleet. (PROSE: Death of the Doctor)
Amaranth, Azure and Aureolin faked the death of the Eleventh Doctor together with Tia Karim of UNIT to get access to the TARDIS. (TV: Death of the Doctor)
Amaranth and the other Claw Shansheeth died when the memory weave overloaded. (TV: Death of the Doctor)
Behind the scenes
The name Amaranth was only mentioned in the novelisation. In the television story the Shansheeth remained unnamed.