P. baileyi grows to around 12 centimetres (4.7 in) SL and can be identified by sparse, or dense, coverage of epidermal outgrowths or cirri on the head and body. The cirri tend to be more profuse in the juvenile state, becoming reduced or non-existent at higher ages. The abdomen is usually golden or orange, with no other markings. Like other pufferfish P. baileyi is scaleless. it's known to be aggressive in aquarium.