The Pakistan Butterflyfish, Chaetodon collare, is a deep-bodied, laterally compressed species dressed in brown to nearly black scales, each marked with a pale spot that creates a fine stippled texture across the flanks. Contrasting white bands cross the face, a dark band runs through the eye, and the tail carries a bold red panel edged in black and white, making adults unmistakable among the collared butterflyfishes. The species ranges widely through the Indo-West Pacific, from the Persian Gulf and Maldives east to Indonesia, the Philippines, and Japan, where adults patrol reef edges and upper slopes in pairs or loose aggregations while juveniles sometimes move into estuarine water. Adults reach roughly 7 inches, placing this among the larger commonly available Chaetodon species.

Adult housing calls for a mature, stable aquarium of at least 125 gallons, and a pair introduced together should be given noticeably more volume than a single fish. Build the layout around generous rockwork that offers grazing surfaces and secure retreats, then leave broad open lanes for continuous cruising, since this is a fish that covers ground throughout the day. Strong filtration, brisk oxygenation, and consistently high water quality matter, as does at least one region of appreciable current that mirrors the exposed reef edges the species favors in the wild.

Care level is moderate rather than beginner territory, and the main hurdle is nutritional rather than structural. Established specimens that are already eating prepared food settle in reliably in a well-matured system, but the transition period demands patience and a stocked freezer.