>
Alepocephaliformes (Slickheads and tubeshoulders.) >
Platytroctidae (Tubeshoulders)
Etymology: Normichthys: Because of John Roxburgh Norman, British ichthyiologist 1898-1944 (Ref. 45335).
Eponymy: John Roxborough Norman (1898–1944) was an English ichthyologist who started his working life as a bank clerk. [...] The Yahgan, also called Yaghan or Yagán, are an indigenous people of Tierra del Fuego who, according to the author, “…practiced shellfish conservation and avoided exhausting their food supply.” (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ecologia
marino batipelagico; distribuzione batimetrica 0 - 2000 m. Deep-water; 30°S - 60°S
Circumglobal in the Sub-tropical Convergence region of the Southern Hemisphere, mostly between 30°S and 50°S; one record from 59°S, 60°W.
Size / Peso / Age
Maturity: Lm ? range ? - ? cm
Max length : 16.4 cm SL maschio/sesso non determinato; (Ref. 5161)
Short description
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 0; Raggi dorsali molli (totale) : 17 - 20; Spine anali: 0; Raggi anali molli: 16 - 19.
Associated with the Antarctic Intermediate Water. Biology unknown (Ref. 5161). Minimum depth from Ref. 58018.
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
Heemstra, P.C., 1990. Platytroctidae. p. 115. In O. Gon and P.C. Heemstra (eds.) Fishes of the Southern Ocean. J.L.B. Smith Institute of Ichthyology, Grahamstown, South Africa. (Ref. 5161)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
Pesca: di nessun interesse
Strumenti
Special reports
Download XML
Fonti Internet
Estimates based on models
Preferred temperature (Ref.
123201): 5 - 11.6, mean 7.6 °C (based on 310 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.4 ±0.5 se; based on size and trophs of closest relatives
Resilienza (Ref.
120179): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (Assuming tmax>3).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
