Glow Axolotl (Blockbench)

This is a type of axolotl that only spawns in deepslate lush caves. It’s almost as rare as a blue axolotl, and it lights up the surrounding area, even if it’s in a bucket. It's like a portable torch, even when in your hotbar. Although, it makes your detection distance for hostile mobs greater, since you're holding a walking torch.