Species: catlotl
Catlotl is a custom cat and axolotl hybrid species created by Releed.
Catlotls have 6 gills with the top 2 gills being the largest and the bottom 2 gills being the smallest. They have a cat-like tail. The colors can be any colors that an axolotl would have.
A free 3D model is available on Booth (requires an account to download): https://releed.booth.pm/items/2633551