HomeFish encyclopediaRay-finned fishesAnglerfishesDreamersPlainchin dreamarm Plainchin dreamarm (Leptacanthichthys gracilispinis) Scientific name: Leptacanthichthys gracilispinis Regan, 1925 The Plainchin dreamarm (Leptacanthichthys gracilispinis) is a marine fish of the family Oneirodidae. Native range: North Atlantic, including Canada. Also Pacific Ocean. BiologyDorsal soft rays (total): 4-6; Anal soft rays: 5 - 6. Unique among dreamers in having a well-developed mandibular spine and a very elongate and narrow pectoral fin lobe. Dark in color, with the esca unpigmented in patches.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameLeptacanthichthys gracilispinisFamilyOneirodidae (Dreamers)OrderLophiiformes (Anglerfishes)ClassActinopterygii (Ray-finned fishes)Maximum length0.8Depth range0–2000 m (0–6562 ft)EnvironmentMarine; bathypelagic; depth range 0 - 2000 m, usually 1000 - ? mClimateDeep-waterDistributionNorth Atlantic: including Canada. Also Pacific Ocean.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries:ResilienceHigh, 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