HomeFish encyclopediaRay-finned fishesCodsCodletsUnicorn cod Unicorn cod (Bregmaceros mcclellandi) Scientific name: Bregmaceros mcclellandi Thompson, 1840 The Unicorn cod (Bregmaceros mcclellandi) is a brackish-water fish of the family Bregmacerotidae. BiologyDorsal spines: 0; Dorsal soft rays: 57-66; Anal spines: 0; Anal soft rays: 58 - 69; Vertebrae: 52 - 58. Body is elongate, brownish and with speckling above and silvery below. The cheek and lower head also silver. Single occipital ray long and delicate, extending to near the middle of the second dorsal fin. Pelvic fins are jugular.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameBregmaceros mcclellandiFamilyBregmacerotidae (Codlets)OrderGadiformes (Cods)ClassActinopterygii (Ray-finned fishes)Maximum length9.6Common length7.0Depth range0–2000 m (0–6562 ft)EnvironmentMarine; brackish; pelagic-oceanic; oceanodromous; depth range 0 - 2000 mClimateSubtropicalDistributionEastern Indian Ocean: Probably restricted to the area from West India to eastern Thailand. Reports from outside this area are most likely misidentifications. However, larval occurrence is wide in the tropics.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercialResilienceHigh, minimum population doubling time less than 15 months (Assuming tm=1) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026