Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopteri (ray-finned fishes) > Perciformes/Cottoidei
() > Liparidae
Etymology: Paraliparis: Greek, para = the side of + Greek, liparis = fat (Ref. 45335); nullansa: Nullansa from the Latin null, none, and ansa, helve, to denote the absence of a scapular helve in this species (Ref. 90026). More on author: Stein.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range ? - 1990 m (Ref. 90026). Polar
Southern Ocean: known only from the holotype, taken at 1954–1990 m off the NW edge of Mawson Bank, Ross Sea (Ref. 90026).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 29.8 cm TL (female)
Morphology | Morphometrics
V 71, D 60, A 54, C 7, P 21, notch rays rudimentary. Scapula lacking helve; radials 3 (2+0+1), R2 notched, coracoid with basal notch. Teeth small canines, almost entirely uniserial in each jaw; premaxillary teeth about 40, not reaching posteriorly to end of jaw; anteriormost teeth tiny, difficult to see. Gill opening about 15% HL, entirely above pectoral fin; gill flap absent. (Ref. 90026).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Stein, D.L., 2012. Snailfishes (Family Liparidae) of the Ross Sea, Antarctica, and Closely Adjacent Waters. Zootaxa 3285:1-120. (Ref. 90026)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
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 (0.00219 - 0.00998), 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
): 3.6 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (35 of 100) .