# Ribbonfish

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{{Short description|Family of fishes}}
{{Automatic Taxobox
| name = Ribbonfish
| fossil_range = {{fossil range|Late Miocene|present}}
| image = Dealfish.jpg
| image_caption = ''[Desmodema polystictum](/source/Desmodema_polystictum)''
| taxon = Trachipteridae
| authority = [Swainson](/source/William_Swainson), 1839
| subdivision_ranks = Genera
| subdivision = ''[Desmodema](/source/Desmodema)''<br>
''[Trachipterus](/source/Trachipterus)''<br>
''[Zu](/source/Zu_(fish))''
}}

The '''ribbonfish''' are any [lampriform](/source/lampriform) fishes in the [family](/source/Family_(taxonomy))  '''Trachipteridae'''. There are about 10 recognized species in the family. These [pelagic fish](/source/pelagic_fish) are named for their slim, ribbon-like appearance. They are rarely seen alive, as they typically live in deep waters, though are not bottom feeders.  The [perciform fish](/source/perciformes) known as the [red bandfish](/source/Cepola_macrophthalma) (''Cepola macrophthalma'') is sometimes referred to as ribbonfish, but it is unrelated to any ribbonfish in the Trachipteridae.

They are readily recognized by their [anatomy](/source/Fish_anatomy) — a long, compressed, tape-like body, short head, narrow mouth and feeble teeth. A high [dorsal fin](/source/dorsal_fin) occupies the whole length of the back; an [anal fin](/source/anal_fin) is absent, and the [caudal fin](/source/caudal_fin), if present, consists of two fascicles of rays of which the upper is prolonged and directed upwards. The [pectoral fin](/source/pectoral_fin)s are small, the [pelvic fin](/source/pelvic_fin)s composed of several rays, or of one long ray only.<ref name=EB1911>{{EB1911 |wstitle=Ribbon-fishes |volume=23 |pages=282–283 |inline=1}}</ref> They have heavy spines along their [lateral line](/source/lateral_line)s, and numerous lumps in the skin.<ref name=EoF>{{cite book |editor=Paxton, J.R. |editor2=Eschmeyer, W.N.|author= Olney, John E.|year=1998|title=Encyclopedia of Fishes|publisher= Academic Press|location=San Diego|isbn= 0-12-547665-5|page= 158}}</ref> Ribbonfish possess all the characteristics of fish living at very great depths. Their fins especially, and the membrane connecting them, are of a very delicate and brittle structure. In young ribbonfish, some of the fin-rays are prolonged to an extraordinary degree, and sometimes provided with appendages.<ref name=EB1911/>

Specimens have been taken in the [Atlantic](/source/Atlantic), the [Mediterranean](/source/Mediterranean), the [Bay of Bengal](/source/Bay_of_Bengal), at [Mauritius](/source/Mauritius), and in the [Pacific](/source/Pacific). The species from the Atlantic has occurred chiefly on the northern coasts, [Iceland](/source/Iceland), [Scandinavia](/source/Scandinavia), [Orkney](/source/Orkney), and [Scotland](/source/Scotland). The north Atlantic species is known in English as ''deal fish'', in [Icelandic](/source/Icelandic_language) as ''vogmær''<ref name=EB1911/> and in [Swedish](/source/Swedish_language) as ''[vågmär](/source/%3Asv%3AV%C3%A5gm%C3%A4r)''. Its length is usually 5 to 8&nbsp;ft (1.5–3.5&nbsp;m), but it can sometimes be found at over 20&nbsp;ft. Specimens seem usually to be driven to the shore by gales in winter, and are sometimes left by the tide. S. Nilsson, however, in Scandinavia observed a living specimen in two or three fathoms (4–5&nbsp;m) of water moving something like a flatfish with one side turned obliquely upwards.<ref name=EB1911/> A specimen of ''Trachipterus ishikawae'' was discovered on a beach in Kenting, Taiwan, in November 2007, alive but with a 10-cm cut wound to its side, and was returned to deeper water.

The species ''Trachipterus ishikawae'' is commonly called "earthquake fish" in Taiwan because the fish are popularly believed to appear following major [earthquake](/source/earthquake) events due to alleged sensitivity to disturbances in the ocean floor. Records of such appearances were made following a 100-year earthquake in Hengchun in late 2006 and in Taitung in 2007, as well as the numerous March 2011 sightings along the coast of Japan, but other recorded sightings do not correspond with seismic disturbances.

==References==
{{Reflist}}
* {{FishBase family | family = Trachipteridae | month = February | year = 2006}}

==External links==
* [https://web.archive.org/web/20081011195229/http://uk.reuters.com/news/video?videoId=92027 Fisherman net rare "earthquake" fish] video - Reuters
* [http://www.thefreedictionary.com/Ribbon+fish www.thefreedictionary.com/Ribbon+fish] Ribbon fish at The Free Dictionary

{{Taxonbar|from=Q1057454}}

Category:Trachipteridae

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Adapted from the Wikipedia article [Ribbonfish](https://en.wikipedia.org/wiki/Ribbonfish) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Ribbonfish?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.