The Saddleback Butterflyfish is also commonly referred to as the True Falcula Butterflyfish. It is one of the most aggressive fish and competes for food against other aggressive tankmates. The Saddleback Butterflyfish prefers to live in pairs and grows up to 8 inches in the wild and should be kept in a tank not less than 50 gallons. It is often found nipping over the corals, fan worms, and other invertebrates and that is why it is not considered safe for a reef tank. The Saddleback Butterflyfish hides in various cracks, crevices and holes during night time therefore a tank should be well established with plenty of hiding spots. It is mainly active during the day time and lethargic at night time. The Saddleback Butterflyfish is a durable fish and can live up to 15 years in a properly maintained saltwater aquarium. It thrives well in a temperature range of 72-78 degrees Fahrenheit and pH of 8.1-8.4. Initially the Saddleback Butterflyfish might be resistant to accepting a captive diet but can be enticed with a small anemone or rock of aiptaisia. Eventually it will learn to adjust to its new diet by following the example of its tank mates. The Saddleback Butterflyfish should be fed with mysis shrimp, marine and crustacean flesh as well as frozen preparations.