HomeFish encyclopediaRay-finned fishesAnglerfishesDreamersNightmare dreamer Nightmare dreamer (Oneirodes epithales) Scientific name: Oneirodes epithales Orr, 1991 The Nightmare dreamer (Oneirodes epithales) is a marine fish of the family Oneirodidae. Native range: Northwest Atlantic, south of Newfoundland, Canada. BiologyDorsal soft rays (total): 5; Anal soft rays: 4. Esca of this species comprises a single, short, unpigmented medial appendage with 16 short filaments, an elongate anterior appendage which is branched at the tip, and no lateral and antero-lateral appendages. Anterior appendage with pigment internally for about one-half its length, with a paired eye-spot at tip of the pigment. There is also a paired eye-spot in the dorsal pigment patch of the escal bulb.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameOneirodes epithalesFamilyOneirodidae (Dreamers)OrderLophiiformes (Anglerfishes)ClassActinopterygii (Ray-finned fishes)Maximum length12.8Depth range0–1829 m (0–6001 ft)EnvironmentMarine; bathypelagic; depth range 0 - 1829 mClimateDeep-waterDistributionNorthwest Atlantic: south of Newfoundland, Canada.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (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