HomeFish encyclopediaRay-finned fishesPerch-like fishDragonetsCircled dragonet Circled dragonet (Synchiropus circularis) Scientific name: Synchiropus circularis Fricke, 1984 The Circled dragonet (Synchiropus circularis) is a marine fish of the family Callionymidae. Native range: Western Pacific, Mariana Islands. More recently reported from the Chesterfield Islands. BiologyDorsal spines (total): 4; Dorsal soft rays (total): 8; Anal spines: 0; Anal soft rays: 7 - 8. Preopercular spine 0[1/0]1.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSynchiropus circularisFamilyCallionymidae (Dragonets)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length2.3Depth range8 m (26 ft)EnvironmentMarine; reef-associated; depth range ? - 8 mClimateTropicalDistributionWestern Pacific: Mariana Islands. More recently reported from the Chesterfield Islands.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