First, you better have a huge tank. Second, if you put a leopard shark in also, i will wait for you to report its death. Leopards grow to nine feet and they need their space. Just because smoothhound sharks are smaller doesn't make them suitable. What is your tank size? What is your filtration? Infact, if you answer these questions, i can probably make a shark suggestion. Do not buy these great creatures yet, if ever.
Sharks. The most amazing creature ever.