HomeFish encyclopediaRay-finned fishesPuffers and FilefishesPuffersSpiny blaasop Spiny blaasop (Tylerius spinosissimus) Scientific name: Tylerius spinosissimus Regan, 1908 The Spiny blaasop (Tylerius spinosissimus) is a marine fish of the family Tetraodontidae. Native range: Indo-West Pacific, South Africa to northwestern Australia; northward to South China Sea. Southeast Atlantic: southeast coast of South Africa. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 8-9; Anal spines: 0; Anal soft rays: 6 - 7. Grey with a dark blotch above and behind eye and at base of dorsal fin; rear margin of caudal fin black; black specks on belly.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameTylerius spinosissimusFamilyTetraodontidae (Puffers)OrderTetraodontiformes (Puffers and Filefishes)ClassActinopterygii (Ray-finned fishes)Maximum length12.0Depth range250–435 m (820–1427 ft)EnvironmentMarine; bathydemersal; depth range 250 - 435 mClimateDeep-waterDistributionIndo-West Pacific: South Africa to northwestern Australia; northward to South China Sea. Southeast Atlantic: southeast coast of South Africa.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