The Puffer is dark brown to green on the back with a white underside. These fish have many yellow lines and spots covering the backside of the fish, giving it an interesting look. Also there are a few black spots that are outlined in yellow on the tail, body and nose.The ideal aquarium will have brackish water with many plants (either real or plastic), rocks with plenty of hiding places, and a sandy bottom composed of an aragonite-based sand. The Puffer can be aggressive to members of its own species, so care should be taken when housed together.