The African Butterflyfish has massive pectoral fins that resemble All those of a butterfly, that's why the fish’s popular title. Once airborne, the fish followers out the fins to maximize the area area and actually fly! African Butterflyfish are indigenous on the central Congo and lower Niger in West Africa, https://aquariumshops.finance.blog/2022/10/04/tips-to-keep-your-fish-healthy-in-a-tank/