Even the smaller, slow growing Epaulette's should be housed in at least a 180g display. I would not attempt any shark until you have several years of saltwater experience allowing you the opportunity to learn and experience disease, animal behaviors, nutritional aspects, and water chemistry. I have personally seen sharks in too small of a system, 180g+, with severed body parts and major infections from aggression. Take it from someone who has professionally worked with Nurse sharks, Black-tips, Epaulette's, and various Bamboo sharks...they are not for average-sized systems. For example, ime a comfortable system for a trio of epaulette's (you never really own just 1) would be a custom tank of at least 300g.
*By the way, Nurse shark's and White-tips are born at 1ft+