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Trematomus lepidorhinus (Pappenheim, 1911)

Slender scalyhead
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Trematomus lepidorhinus   AquaMaps   Data sources: GBIF OBIS
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Image of Trematomus lepidorhinus (Slender scalyhead)
Trematomus lepidorhinus
Female picture by Shandikov, G.A.

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Perciformes/Notothenioidei (Icefishes) > Nototheniidae (Cod icefishes) > Trematominae
Etymology: Trematomus: Greek, trematos = hole + Greek, tomo = section, cut (Ref. 45335); lepidorhinus: lepidorhinus from Greek, lepido means scale; rhinus means snout (Ref. 11892).

Issue
The genus Pseudotrematomus is a synonym of Trematomus, which is confirmed by a molecular study to be published (J.-C. Hureau, pers. comm. 08 Jun. 2010).

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; bathydemersal; depth range 200 - 800 m. Deep-water; 60°S - 78°S, 180°W - 180°E

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Southern Ocean: inner slope and continental shelf of Antarctica, except the Antarctic Peninsula. Two specimens are reported from South Orkney islands.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 31.0 cm TL male/unsexed; (Ref. 5179); max. published weight: 276.30 g (Ref. 124149)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 6 - 7; Dorsal soft rays (total): 31 - 33; Anal soft rays: 34 - 36. Brownish with irregular indistinct darker crossbars, spinous dorsal blackish. Mouth and branchial cavities blackish (Ref. 11892).

Biology     Glossary (e.g. epibenthic)

Adults feed on amphipods (mostly Themisto gaudichaudii), copepods, polychaetes, and mysids.

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Dewitt, H.H., P.C. Heemstra and O. Gon, 1990. Nototheniidae. p. 279-331. In O. Gon and P.C. Heemstra (eds.) Fishes of the Southern Ocean. J.L.B. Smith Institute of Ichthyology, Grahamstown, South Africa. (Ref. 5179)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Not Evaluated 

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fisheries: of no interest
FAO - Publication: search | FishSource |

More information

Trophic ecology
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Ecology
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References

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Summary page | Point data | Common names | Photos

Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201): -1.8 - 1.1, mean -0.9 °C (based on 763 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5005   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00427 (0.00285 - 0.00638), b=3.22 (3.10 - 3.34), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.8   ±0.2 se; based on diet studies.
Resilience (Ref. 120179):  Medium, minimum population doubling time 1.4 - 4.4 years (Fec = 2,200).
Fishing Vulnerability (Ref. 59153):  High vulnerability (62 of 100).
Nutrients (Ref. 124155):  Calcium = 24.9 [14.7, 63.2] mg/100g; Iron = 0.463 [0.191, 0.925] mg/100g; Protein = 17.2 [16.1, 18.3] %; Omega3 = 0.406 [0.222, 0.713] g/100g; Selenium = 14.9 [6.1, 36.2] μg/100g; VitaminA = 29.1 [6.2, 142.1] μg/100g; Zinc = 0.473 [0.306, 0.729] mg/100g (wet weight); based on nutrient studies.