Beardfishes Temporal range:
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Stout Beardfish, (P. nobilis) | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
(unranked): | Acanthomorpha |
Order: | Polymixiiformes |
Family: |
Polymixiidae Bleeker, 1859 |
Type species | |
Polymixia nobilis
R. T. Lowe, 1838
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Families | |
| |
Synonyms | |
|
The beardfishes consist of a single extant genus, Polymixia, of deep-sea marine ray-finned fish named for their pair of long hyoid barbels. They are classified in their own order Polymixiiformes /pɒliˈmɪksi.ɪfɔːrmiːz/. [1] But as Nelson says, "few groups have been shifted back and forth as frequently as this one, and they were recently added to Paracanthoptergii". [2] For instance, they have previously been classified as belonging to the Beryciformes. They are of little economic importance. [3]
They are found in tropical and subtropical waters of the Atlantic, Indian and western Pacific Ocean. They are bottom-dwelling fish, found down to about 800 m (2,600 ft) depth. Most are relatively small fish, although one species, Polymixia berndti, is over 40 cm (16 in) in length. [3]
The earliest fossils are from the Turonian of Canada, from the former Western Interior Seaway. [4]
Beardfishes Temporal range:
| |
---|---|
Stout Beardfish, (P. nobilis) | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
(unranked): | Acanthomorpha |
Order: | Polymixiiformes |
Family: |
Polymixiidae Bleeker, 1859 |
Type species | |
Polymixia nobilis
R. T. Lowe, 1838
| |
Families | |
| |
Synonyms | |
|
The beardfishes consist of a single extant genus, Polymixia, of deep-sea marine ray-finned fish named for their pair of long hyoid barbels. They are classified in their own order Polymixiiformes /pɒliˈmɪksi.ɪfɔːrmiːz/. [1] But as Nelson says, "few groups have been shifted back and forth as frequently as this one, and they were recently added to Paracanthoptergii". [2] For instance, they have previously been classified as belonging to the Beryciformes. They are of little economic importance. [3]
They are found in tropical and subtropical waters of the Atlantic, Indian and western Pacific Ocean. They are bottom-dwelling fish, found down to about 800 m (2,600 ft) depth. Most are relatively small fish, although one species, Polymixia berndti, is over 40 cm (16 in) in length. [3]
The earliest fossils are from the Turonian of Canada, from the former Western Interior Seaway. [4]