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); longiventris: Name refers to the particularly distinctive morphological feature of this species, the long abdominal cavity (Latin 'long' and 'venter', abdomen).
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range ? - 1058 m (Ref. 92437). Deep-water
Southwest Pacific: north central Chatham Rise off New Zealand.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 7.7 cm SL (female)
Morphology | Morphometrics
This species is distinguished by having the following characters: long abdomen, distance from mandible to end of abdominal cavity about 187% HL; angle of mouth 60°; teeth lanceolate, sharp; premaxillary symphyseal gap absent, mandibular symphyseal gap narrow; no coronal pore; pectoral fin rays 16 (7+4+5); radials 4 (1+1+1+1), R1, R2 notched; stomach black, intestine creamy white (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. 123251)
CITES (Ref. 118484)
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 (0.00221 - 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
): 3.3 ±0.6 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 (13 of 100) .