Spectral indices measured between 144 MHz and 344 MHz for Perseus jellyfish galaxies. The x-axis corresponds to a spectral index measured over the galaxy disk and the y-axis corresponds to a spectral index measured over the stripped tail. We also show the expected star-forming galaxy injection spectral index of −0.7 to −0.5 with the shaded region. We do not measure a spectral index for UGC 2665 due to the blending of both the galaxy and tail emission with the central Perseus mini-halo in the smoothed 144 MHz image.