Trematomus bernacchii Boulenger, 1902
Emerald rockcod
Add your observation in Fish Watcher
| Native range | All suitable habitat | Point map | Year 2050 |
|
| This map was computer-generated and has not yet been reviewed. |
| Trematomus bernacchii AquaMaps Data sources: GBIF OBIS |
Upload your photos and videos
Pictures | Google image
Trematomus bernacchii
Picture by Zimmermann, C.
Pictures | Google image
Picture by Zimmermann, C.
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); bernacchii: Species name bernacchii honors Louis Bernarcchi, an Australian physicist-meteorologist; specimen collected on the Southern Cross Expedition and served on Scott's 1901 expedition (Ref. 45168).
Eponymy: Louis Charles ‘Bunny’ Bernacchi (1876–1942) was a physicist and astronomer who took part in several expeditions to Antarctica. [...] (Ref. 128868), visit book page.
More on author: Boulenger.
Etymology: Trematomus: Greek, trematos = hole + Greek, tomo = section, cut (Ref. 45335); bernacchii: Species name bernacchii honors Louis Bernarcchi, an Australian physicist-meteorologist; specimen collected on the Southern Cross Expedition and served on Scott's 1901 expedition (Ref. 45168).
Eponymy: Louis Charles ‘Bunny’ Bernacchi (1876–1942) was a physicist and astronomer who took part in several expeditions to Antarctica. [...] (Ref. 128868), visit book page.
More on author: Boulenger.
Taxonomic Remarks
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; demersal; depth range 0 - 700 m (Ref. 11892), usually 0 - 200 m (Ref. 45168). Polar; 61°S - 78°S
Distribution Territories | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
Southern Ocean: Peter Island, South Shetland, Elephant and South Orkney islands. Mac-Robertson, Queen Mary, Adelie Coasts, Weddell, Davis and Ross seas. East Antarctica from Queen Maud Land to Terre Adelie.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 18 - ? cm
Max length : 28.0 cm TL male/unsexed; (Ref. 5179); 35.0 cm TL (female); common length : 25.0 cm TL male/unsexed; (Ref. 2121); max. reported age: 10 years (Ref. 5179)
Max length : 28.0 cm TL male/unsexed; (Ref. 5179); 35.0 cm TL (female); common length : 25.0 cm TL male/unsexed; (Ref. 2121); max. reported age: 10 years (Ref. 5179)
Short description Identification keys | Morphology | Morphometrics
Dorsal spines (total): 4 - 6; Dorsal soft rays (total): 34 - 39; Anal soft rays: 31 - 35. Body brownish, large dark spots in two or three series on body. Spinous dorsal blackish in upper part (Ref. 11892).
Body shape (shape guide): fusiform / normal.
Body shape (shape guide): fusiform / normal.
Found in seafloors, well adapted to extremely low and stable temperatures (-1.86°C), annual mean temperature of McMurdo Sound) (Ref. 45168). Feed on polychaetes, gastropods, isopods, amphipods and few algae. Spawn once a year (Ref. 1071). Utilized for human consumption. The report by Ref. 4537 as commercially important is probably a mistake for Trematomus eulepidotus (SAU, NB303).
Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Although members of this Family are known to tend to egg masses, it is assumed that because of the high fecundity, this species is a non-guarder (RF), to be corrected if direct information becomes available.
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)
CITES
Not Evaluated
Threat to humans
Harmless
Human uses
FAO - Publication: search | FishSource |
More information
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Life cycle
Reproduction
Maturity
Maturity/Gills rel.
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics
Reproduction
Maturity
Maturity/Gills rel.
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics
Anatomy
Gill area
Brain
Otolith
Gill area
Brain
Otolith
Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Human related
Aquaculture systems
Aquaculture profiles
Strains
Ciguatera cases
Stamps, coins, misc.
Aquaculture systems
Aquaculture profiles
Strains
Ciguatera cases
Stamps, coins, misc.
Tools
Bio-Quiz | E-book | Field guide | Length-frequency wizard | Life-history tool | Point map |
Catch-MSY |
Special reports
Download XML
Internet sources
AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoobank | Zoological Record
Estimates based on models
|
Phylogenetic diversity index (Ref. 82804) |
PD50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.00537 (0.00282 - 0.01024), b=3.24 (3.07 - 3.41), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
|
Trophic level (Ref. 69278) |
3.4 ±0.1 se; based on diet studies. |
| Generation time | 5.9 (2.0 - 12.2) years. Estimated as median ln(3)/K based on 11 growth studies. |
|
Resilience (Ref. 120179) |
Medium, minimum population doubling time 1.4 - 4.4 years (K=0.19-0.91; tm=3-6; tmax=10; Fec=1,200-3,123). |
|
Fishing Vulnerability (Ref. 59153) |
Moderate to high vulnerability (53 of 100). 🛈 |
|
Nutrients (Ref. 124155) |
Calcium = 31.4 [18.6, 70.0] mg/100g; Iron = 0.456 [0.206, 0.860] mg/100g; Protein = 17.3 [16.3, 18.4] %; Omega3 = 0.417 [0.228, 0.727] g/100g; Selenium = 15.4 [6.7, 32.6] μg/100g; VitaminA = 15.6 [3.5, 70.7] μg/100g; Zinc = 0.515 [0.356, 0.761] mg/100g (wet weight); based on nutrient studies. |