Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopteri (ray-finned fishes) > Perciformes/Cottoidei
() > Liparidae
Etymology: Psednos: Greek, psednos, -e, -on = rare (Ref. 45335); platyoperculosus: Name from Greek 'platy' for broad, and Latin 'operculum' for cover; referring to the unusually wide opercle of this species.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range ? - 1163 m (Ref. 92437). Deep-water
Southwest Pacific: Chatham Rise, New Zealand.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 9.8 cm SL male/unsexed; (Ref. 92437)
Morphology | Morphometrics
soft rays: 43 - 44;
Vertebrae: 59. This species is distinguished by the following characters: vertebrae 59, pectoral fin rays 16-17, caudal fin rays 6, pyloric caeca 7; body humpbacked; mouth angle about 40°; gill opening above pectoral and extending ventrally in front of 1-3 rays, about 1/4 HL; opercle a broad stout shaft dorsally, widening at level of gill opening and then narrowing to form a sharp posteroventrally pointing tip reaching to behind pectoral fin base; small symphyseal pores are widely separated, obscure; short abdomen ca 80% HL; body whitish, pyloric caeca reticulated black at base and for about 1/2 length, pale distally (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. 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
): 3.4 ±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 (16 of 100) .