Sternopygus macrurus electric organ transcriptome and cell size exhibit insensitivity to short-term electrical inactivity.

•Spinal cord transection has minimal effect on sarcomeric gene expression.•Electrical inactivity caused a transient upregulation of proteolytic mechanisms.•Electrocyte size did not change after spinal cord transection.•Electrocyte-“specific” genes were unaffected by short-term electrical inactivity.