emerald rockcod
Trematomus bernacchii Boulenger, 1902
Accepted species in Catalogue of Life’s 11 September 2026 base release. This preserves the source classification and available supporting data; it is not a completed species monograph.
Trematomus bernacchii
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Open encyclopedia reference
The emerald rockcod (Trematomus bernacchii), also known as the emerald notothen, is a species of marine ray-finned fish belonging to the family Nototheniidae, the notothens or cod icefishes. It is native to the Southern Ocean
Wikipedia contributors, Emerald rockcod; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T04:59:09.540325+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Trematomus bernacchii Boulenger, 1902
- Name authority
- Boulenger, 1902
- Common name
- emerald rockcod
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Perciformes
- Family
- Nototheniidae
- Genus
- Trematomus
- Extinction status
- Not supplied by this source
Source habitat flags: Marine: yes · Freshwater: no · Terrestrial: no. These do not form a complete habitat description.
Classification family tree
Nested taxonomic groups from the source. This is not a direct-ancestor chain, a dated evolutionary tree or a phylogenetic reconstruction.
- domainEukaryota (Chatton, 1925) Whittaker & Margulis, 1978
- kingdomAnimalia
- phylumChordata
- subphylumVertebrata
- infraphylumGnathostomata
- parvphylumOsteichthyes
- gigaclassActinopterygii
- superclassActinopteri
- classTeleostei
- orderPerciformes
- suborderNotothenioidei
- familyNototheniidae Günther, 1861
- subfamilyTrematominae Balushkin, 1982
- genusTrematomus Boulenger, 1902
- speciesTrematomus bernacchii Boulenger, 1902
Close classified relatives
These entries share the source’s genus, Trematomus. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Trematomus brachysoma Pappenheim, 1912 | NototheniidaeChordata | Accepted speciesExtinction status not supplied |
| blunt scalyheadTrematomus eulepidotus Regan, 1914 | NototheniidaeChordata | Accepted speciesExtinction status not supplied |
| striped rockcodTrematomus hansoni Boulenger, 1902 | NototheniidaeChordata | Accepted speciesExtinction status not supplied |
| slender scalyheadTrematomus lepidorhinus (Pappenheim, 1911) | NototheniidaeChordata | Accepted speciesExtinction status not supplied |
| deepwater notothenTrematomus loennbergii Regan, 1913 | NototheniidaeChordata | Accepted speciesExtinction status not supplied |
| spotted notothenTrematomus nicolai (Boulenger, 1902) | NototheniidaeChordata | Accepted speciesExtinction status not supplied |
| blackfin notothenTrematomus scotti (Boulenger, 1907) | NototheniidaeChordata | Accepted speciesExtinction status not supplied |
| orange notothenTrematomus vicarius Lönnberg, 1905 | NototheniidaeChordata | Accepted speciesExtinction status not supplied |
| bigeye notothenTrematomus tokarevi Andriashev, 1978 | NototheniidaeChordata | Accepted speciesExtinction status not supplied |
| Trematomus peninsulae (Daniels, 1981) | NototheniidaeChordata | Accepted speciesExtinction status not supplied |
| dusky notothenTrematomus newnesi Boulenger, 1902 | NototheniidaeChordata | Accepted speciesExtinction status not supplied |
| sharp-spined notothenTrematomus pennellii Regan, 1914 | NototheniidaeChordata | Accepted speciesExtinction status not supplied |
Names & synonyms
Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.
| Recorded name | Source status |
|---|---|
| Pseudotrematomus bernacchii (Boulenger, 1902) (Boulenger, 1902) | synonym |
| Trematomus bernachii Boulenger, 1902 Boulenger, 1902 | synonym |
| Notothenia bernacchii (Boulenger, 1902) (Boulenger, 1902) | synonym |
| Pagothenia bernacchii (Boulenger, 1902) (Boulenger, 1902) | synonym |
Source literature & publication evidence
References attached to this source record, including nomenclatural citations where supplied. This is a selected bibliography; abbreviated citations remain in the source’s form.
- Boulenger, G. A. (1902). Pisces. In: Report on the Collections of Natural History Made in the Antarctic Regions during the Voyage of the “Southern Cross”. [ Ix, 344 P., 53 Leaves of Plates], Pt 5: 174–189, Pls. 11–18. Source fields: Taxon.tsv dwc:namePublishedIn, Taxon.tsv dcterms:references
Origins, evidence & remaining research
Name authority and publication references document nomenclature where the source supplies it. They do not establish evolutionary origins or the earliest fossil occurrence.
Specimen-level evidence, morphology, ecological research, phylogenetic studies, a comprehensive bibliography and a located literary passage have not yet been compiled for this record.
Dataset citation & attribution
This exact taxon in ChecklistBank · Catalogue of Life 2026-09-11
Catalogue of Life 2026-09-11; dataset 316321; doi:10.48580/dgz5n. https://creativecommons.org/licenses/by/4.0/ . Retrieved 5 October 2026.
Stable key: col:5838C. Classification follows source parent identifiers. English common names may vary by region.