The Longnose Butterfly is one of the most aquarium-adaptable butterflyfish. It will appreciate the presence of some live rocks from which it can extract small worms and crustaceans. The Longnose Butterfly is named aptly due to the presence of long snout which is like a pair of needle-nosed pliers, which it uses to ripping the feeding tentacles off from polychaete worms and the tube feet of sea urchins. It inhabits caves and overhangs, and is not considered very aggressive toward non-relatives, instead it fights with like species. We suggest you to keep this fish singly unless you have a big aquarium. The Longnose Butterfly is found to be more destructive in a reef aquarium, since it occasionally nips over the stony coral polyps and soft coral species, such as Xenia and Anthelia. It should be housed in aquarium not less than 55 gallons with several hiding caves to hide when it feels threatened. The Longnose Butterfly thrives well in a temperature range of 72-82 degrees Fahrenheit, and pH of 8.1-8.4. It is important to do a proper quarantine of this and all marine fish, and it has not been found to spawning in captivity. The Longnose Butterfly features a false eyespot on its tail which helps in confusing the predator whether to attack the front end or the back. Juvenile butterfly fish looks different than the adult ones, and it rests at night by hiding itself under the corals head or inside reef caves and crevices.
The Longnose Butterfly is one of the few Butterflies that does extremely well in the home aquarium. It is brilliant yellow with a mask of black and a white elongated mouth. These fish have brightly colored yellow dorsal spines which add to its alluring look. In the wild, the elongated mouth allows them to reach into crevices of the reef for food. They are great for fish-only tanks. Only one should be kept per tank.The family of Butterflyfish get their name from their behavior of fluttering around the reef. These fish typically have rather round and thin bodies. They are very colorful and some have extended snouts which they use to reach worms entrenched in the reef.