HomeMarine aquarium fishEels, lionfish & predatorsWeedy scorpionfish Weedy scorpionfish (Rhinopias frondosa) Scientific name: Rhinopias frondosa G?nther, 1892 The Weedy scorpionfish (Rhinopias frondosa) is a marine fish of the family Scorpaenidae. Native range: Indo-West Pacific, South Africa (off Durban) east to southern Japan, the Caroline Islands, and eastern Australia. BiologyDorsal spines (total): 12; Dorsal soft rays (total): 9; Anal spines: 3; Anal soft rays: 5. Highly variable in color and in appendages in relation to habitat. Covered with appendages on algae reefs, but plain when deep with sponges. Body highly compressed and covered with weed-like tassels.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameRhinopias frondosaFamilyScorpaenidae (Scorpionfishes or rockfishes)OrderScorpaeniformes (Scorpionfishes and Flatheads)ClassActinopterygii (Ray-finned fishes)Maximum length23.0Depth range13–90 m (43–295 ft)EnvironmentMarine; reef-associated; depth range 13 - 90 mClimateTropicalDistributionIndo-West Pacific: South Africa (off Durban) east to southern Japan, the Caroline Islands, and eastern Australia.Conservation status (IUCN)Not EvaluatedThreat to humansVenomousUsesFisheries: of no interest; aquarium: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) More eels, lionfish & predatorsRed lionfishPterois volitansLeaf scorpionfishTaenianotus triacanthusStonefishSynanceia verrucosaTwospot turkeyfishDendrochirus biocellatusZebra turkeyfishDendrochirus zebraPlaintail turkeyfishPterois russeliiSee all eels, lionfish & predators SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026