when I had my hundred gallon I had a huma trigger and a niger trigger and a pink tail which I had to add in all at once and a dog face puffer and a valintinie puffer and a solo tang and a small passer female angle but as they grew I had to get rid of the angle fish and replaced with a poricpine puffer and they all did nicely but it is your choice and just rember the size of the tank and the fish involved.