Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Scorpaeniformes
(Scorpionfishes and flatheads) > Liparidae
Etymology: Paraliparis: Greek, para = the side of + Greek, liparis = fat (Ref. 45335); nigellus: Name from Latin 'nigellus' meaning blackish, dark (perhaps referring to its color, body color dark blackish brown with bluish tint, head black, belly bluish black). More on authors: Chernova & Møller.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathydemersal; depth range 1950 - 2107 m (Ref. 79982). Deep-water
Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
Northeast Atlantic: northern Mid-Atlantic Ridge.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 13.6 cm TL male/unsexed; (Ref. 79982)
Morphology | Morphometrics
soft rays: 59;
Vertebrae: 73. This species is distinguished by the following characters: D 64, A 59, P 23-25, C 8; vertebrae 73 (12-61); pectoral radials 4 (3+1); simple and uniserial teeth except near jaw symphysis; gill opening shorter than pupil diameter; undeveloped opercular flap; head 16% SL; eye 28% of head length (HL); one symphyseal mandibular pore; pectoral fin with notch rays not rudimentary; interneural of the first dorsal-fin ray between neural spine 6 and 7; anus behind vertical through gill opening; mandible to anus distance almost equal to the length of anus to anal-fin origin; body color dark black-brown, with bluish tint, peritoneum black (Ref. 79982).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Chernova, N.V. and P.R. Møller, 2008. A new snailfish, Paraliparis nigellus sp. nov. (Scorpaeniformes, Liparidae), from the northern Mid-Atlantic Ridge - with notes on occurrence of Psednos in the area. Mar. Biol. Res. 4:369-375. (Ref. 79982)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 118484)
Threat to humans
CountriesFAO areasEcosystemsOccurrencesIntroductionsStocksEcologyDietFood itemsFood consumptionRation
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00468 (0.00221 - 0.00989), b=3.17 (2.98 - 3.36), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.4 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (19 of 100) .