HomeFish encyclopediaRay-finned fishesPerch-like fishCardinalfishesMonster cardinal-fish Monster cardinal-fish (Apogon melanopus) Scientific name: Apogon melanopus Weber, 1911 The Monster cardinal-fish (Apogon melanopus) is a marine fish of the family Apogonidae. Native range: Western Pacific, New Guinea and northwestern Australia. BiologyNocturnal species which occurs over soft bottom.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameApogon melanopusFamilyApogonidae (Cardinalfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length10.0Depth range20–160 m (66–525 ft)EnvironmentMarine; benthopelagic; depth range 20 - 160 mClimateTropicalDistributionWestern Pacific: New Guinea and northwestern Australia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026