HomeFish encyclopediaRay-finned fishesPuffers and FilefishesPuffersRippled blaasop Rippled blaasop (Pelagocephalus marki) Scientific name: Pelagocephalus marki Heemstra & Smith, 1981 The Rippled blaasop (Pelagocephalus marki) is a marine fish of the family Tetraodontidae. Native range: Southeast Atlantic, Port Alfred to Knysna (South Africa). Southwest Pacific: New Zealand. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 9; Anal spines: 0; Anal soft rays: 9. Emerald green reticulations on back and caudal peduncle, becoming black laterally and bright silver ventrally.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePelagocephalus markiFamilyTetraodontidae (Puffers)OrderTetraodontiformes (Puffers and Filefishes)ClassActinopterygii (Ray-finned fishes)Maximum length12.0EnvironmentMarine; demersalClimateTemperateDistributionSoutheast Atlantic: Port Alfred to Knysna (South Africa). Southwest Pacific: New Zealand.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