Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Scorpaeniformes
(Scorpionfishes and flatheads) > Liparidae
Etymology: Psednos: Greek, psednos, -e, -on = rare (Ref. 45335); struthersi: Named for Carl Struthers (National Museum of New Zealand, Te Papa Tongarewa), without whose help this and an earlier monograph on Ross Sea liparids would have been much more difficult to accomplish.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range ? - 1428 m (Ref. 92437). Deep-water
Southwest Pacific: seamount in southern Havre Trough.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 4.8 cm SL male/unsexed; (Ref. 92437)
Morphology | Morphometrics
soft rays: 40;
Vertebrae: 53. This species is distinguished by the following characters: vertebrae 53, pectoral fin rays 13, pyloric caeca 5; angle of mouth 20-30°, upper jaw 60% head; teeth arranged in about 25 oblique rows forming a band of up to four teeth wide; long slender opercle curved posteroventrally, its tip pointing downwards, forming a sharp, acutely angled lobe; coronal pore unknown but probably absent, mandibular symphyseal pores moderately large, oval, situated on each side of symphyseal knob; relatively short and deep abdomen, the distance from mandible to end of abdomen 125%, pectoral symphysis to end of abdomen 75%, anus to anal fin about 65% HL; peritoneum black viewed through the body wall; pyloric caeca black (Ref. 92437).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Stein, D.L., 2012. A review of the snailfishes (Liparidae, Scorpaeniformes) of New Zealand, including descriptions of a new genus and sixteen new species. Zootaxa 3588:1-54. (Ref. 92437)
IUCN Red List Status (Ref. 119314)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties 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 (0.00207 - 0.01059), b=3.19 (2.99 - 3.39), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.2 ±0.6 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .