HomeFish encyclopediaRay-finned fishesPerch-like fishMarblefishesNotchheaded marblefish Notchheaded marblefish (Aplodactylus etheridgii) Scientific name: Aplodactylus etheridgii Ogilby, 1889 The Notchheaded marblefish (Aplodactylus etheridgii) is a marine fish of the family Aplodactylidae. Native range: Southwest Pacific, New Zealand and Lord Howe, Norfolk and Kermadec islands. BiologyInhabits coastal reefs. Feeds on seaweeds.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAplodactylus etheridgiiFamilyAplodactylidae (Marblefishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length45.0EnvironmentMarine; reef-associatedClimateSubtropicalDistributionSouthwest Pacific: New Zealand and Lord Howe, Norfolk and Kermadec islands.Conservation status (IUCN)Not EvaluatedThreat to humansHarmless SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026