Biology:Bighead searsid
From HandWiki
Short description: Species of fish
| Bighead searsid | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Alepocephaliformes |
| Family: | Platytroctidae |
| Genus: | Holtbyrnia |
| Species: | H. anomala
|
| Binomial name | |
| Holtbyrnia anomala (Krefft, 1980)
| |
The bighead searsid (Holtbyrnia anomala) is a species of tubeshoulder fish.[2][3]
Description
It maximum length is 25 cm (9.8 in).[4] Its head is large, making up over a third of the fish's length. It has 25–31 gillrakers; 5–11 pyloric caecae. The snout is pointed, with premaxillary tusks pointing forward.[5]
It is dark red in colour.[6] Its photophores are rudimentary (except for the shoulder organ), hence its specific name anomala ("unusual").[7][8][9]
Habitat
The bighead searsid lives in the North Atlantic Ocean; it is a mesopelagic fish, living at depths of 700–2,000 m (2,300–6,600 ft).[10][11]
References
- ↑ Academy), Tomio Iwamoto (Cal (July 15, 2014). "IUCN Red List of Threatened Species: Holtbyrnia anomala". https://www.iucnredlist.org/en.
- ↑ "ADW: Holtbyrnia anomala: CLASSIFICATION". https://animaldiversity.org/accounts/Holtbyrnia_anomala/classification/.
- ↑ Oceanography, Scripps Institution of (July 1, 1927). Bulletin of the Scripps Institution of Oceanography of the University of California. University of California Press. ISBN 9780520095403. https://books.google.com/books?id=2u9QAQAAMAAJ&q=%22Holtbyrnia+anomala%22.
- ↑ "WoRMS - World Register of Marine Species - Holtbyrnia anomala Krefft, 1980". http://www.marinespecies.org/aphia.php?p=taxdetails&id=126739#attributes.
- ↑ "Marine Species Identification Portal : Bighead searsid - Holtbyrnia anomala". http://species-identification.org/species.php?species_group=fnam&id=1244.
- ↑ "Holtbyrnia anomala (Bighead searsid)". https://descna.com/en/speciesrecords/fish/osteichthyes-bony-fish/osmeriformes/holtbyrnia-anomala-bighead-searsid.
- ↑ "FIGURE 6 The shoulder organ ( ) of Holtbyrnia anomala excreting...". https://www.researchgate.net/figure/The-shoulder-organ-of-Holtbyrnia-anomala-excreting-bioluminescent-substance_fig1_328701330.
- ↑ Nations, Food and Agriculture Organization of the United (August 1, 2020). Identification guide to the mesopelagic fishes of the central and south east Atlantic Ocean. Food & Agriculture Org.. ISBN 9789251330944. https://books.google.com/books?id=gzz8DwAAQBAJ&dq=%22Holtbyrnia+anomala%22&pg=PA48.
- ↑ Coad, Brian W.; Reist, James D. (January 1, 2018). Marine Fishes of Arctic Canada. University of Toronto Press. ISBN 9781442647107. https://books.google.com/books?id=cu9ADwAAQBAJ&dq=%22Holtbyrnia+anomala%22&pg=PA228.
- ↑ "Holtbyrnia anomala, Bighead searsid". https://www.fishbase.se/summary/11312.
- ↑ Carwardine, Mark (July 1, 1986). "Iceland, Nature's Meeting Place: A Wildlife Guide". Iceland Review. https://books.google.com/books?id=MVkJAQAAMAAJ&q=%22Holtbyrnia+anomala%22.
Wikidata ☰ Q1811087 entry
 |  |
