leopard sharks get too large, dont get it till the 1500 is setup, sharks live for a long time, so put them in a tank that they will live their whole lives in. 180 gallons, i wouldnt put any shark in a tank under 300 gallons, but if any sharks were to be put in 180g, i would get a Bamboo shark with nothing else in the tank. I have a shark tank up now, its a 500 gallon. I have a Bamboo shark, snowflake eel, blue spotted stingray, and im getting a lion fish. but no matter what tank, dont put a lot of decoration in it.