Lined Butterflyfish - Saltwater Fish Profile
One of the largest of the saltwater butterfly fish is the Lined Butterflyfish, Chaetodon lineolatus. They can get up to 12 inches or so and need at least a 150 gallon aquarium. Take your time acclimating them and keep them out of reef tanks otherwise you risk losing some of your prized corals. For more detailed info check out the profile here: Lined Butterflyfish.