Actinopterygii (ray-finned fishes) > Scorpaeniformes
(Scorpionfishes and flatheads) > Liparidae
Etymology: Psednos: Greek, psednos, -e, -on = rare (Ref. 45335); steini: Named for David L. Stein, who originally described the specimen on which this species is based (Ref. 42989). More on author: Chernova.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range 0 - 350 m (Ref. 42989). Deep-water
Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
Western Indian Ocean: northern part of Crozet Basin near the southwest Indian Ridge (Ref. 42989).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 3.7 cm SL male/unsexed; (Ref. 42989)
Morphology | Morphometrics
soft rays: 28;
Vertebrae: 43. Coronal pore present, temporal pores 1+1, pectoral fin with 1 notch ray, eye not less than 20% HL, gill slit equal to eye and vertical, its dorsal end level with pupil; color tan (Ref. 42989).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Chernova, N., 2001. A review of the genus Psednos (Pisces, Liparidae) with description of ten new species from the north Atlantic and southwestern Indian Ocean. Bull. Mus. Comp. Zool. 155(10):477-507. (Ref. 42989)
IUCN Red List Status (Ref. 119314)
CITES (Ref. 115941)
Threat to humans
CountriesFAO areasEcosystemsOccurrencesIntroductionsStocksEcologyDietFood itemsFood consumptionRation
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=0.00977 (0.00305 - 0.03131), b=3.03 (2.77 - 3.29), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.2 ±0.5 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) .