HomeFreshwater aquarium fishOther freshwater fishDoublesash butterflyfish Doublesash butterflyfish (Chaetodon marleyi) Scientific name: Chaetodon marleyi Regan, 1921 The Doublesash butterflyfish (Chaetodon marleyi) is a brackish-water fish of the family Chaetodontidae. Native range: Western Indian Ocean, Delagoa Bay, Mozambique to Lamberts Bay, South Africa. BiologyDorsal spines (total): 11; Dorsal soft rays (total): 23-24; Anal spines: 3; Anal soft rays: 18 - 19Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameChaetodon marleyiFamilyChaetodontidae (Butterflyfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length20.0Depth range120 m (394 ft)EnvironmentMarine; brackish; reef-associated; depth range ? - 120 mClimateSubtropicalDistributionWestern Indian Ocean: Delagoa Bay, Mozambique to Lamberts Bay, South Africa.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesAquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More other freshwater fishSouth American lungfishLepidosiren paradoxaLined soleAchirus lineatusPumpkinseedLepomis gibbosusShort-tailed pipefishMicrophis brachyurus brachyurusFinescale tigerfishDatnioides microlepisFreshwater garfishXenentodon cancilaSee all other freshwater fish SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026