Pseudophycis breviuscula (Richardson 1846)

The northern bastard codling (Pseudophycis breviuscula) is a morid cod of the genus Pseudophycis, found around southern Australia including Tasmania, and New Zealand, from the surface to 220 m. Its length is between 15 and 25 cm.

The northern bastard codling is similar in general appearance to the rattails, with large eyes and an elongated, tapering body, but the northern bastard codling has a separate, very rounded caudal fin. The second dorsal fin and the anal fin start about halfway along the body length.

Body colour is brown-pink with dark edges to the dorsal, caudal, and anal fins.

Taxonomy

Pseudophycis breviuscula falls under the ray-finned fish class Actinopterygii. The order Gadiformes represents all cods (both marine, freshwater, and bracken) while the family Moridae is a collection of marine only cod-like fish. In the genus Pseudophycis (of which are only found in Southern Australia and/or New Zealand) there are two other species. Pseudophycis barbata (Southern bastard cod) and Pseudophycis bachus (red codling) complete this genus with P. breviuscula.

Description

P. breviuscula is the smallest of the red cods with maximum size thought to be approximately 250mm. Other red cods can reach lengths up to 900mm. It was previously confused with P. barbata for some years. It can be identified as separate to P. bachus by the lack of presence of a dark spot near the bottom of the pectoral fin and displays larger scales than the southern bastard cod. It has two dorsal fins; the anterior being quite short while the posterior dorsal fin stretches more than half the body length. The caudal (tail) fin is rounded and not overly wide. The ventral aspect of the body is described as silver in color while the dorsal section is a pale pink-brownish color. The eyes are large and a barbel is present on the chin.

Distribution and habitat

P. breviuscula is described as a ‘cryptic fish’ in that its behavior and habitat makes its difficult to study and accurately detect. Cryptic species are often seen to be endemic species. P. breviuscula is endemic New Zealand reef fish that occupies a temperate water climate. It is known to be nocturnal which is likely one of the reasons very little study has been done on it. The only New Zealand recordings of the northern bastard cod are in the North Island. It is more often recorded seen on the eastern coast than the western.

Diet

While very little known is known about the northern bastard cod, a survey conducted on the inhabitants of the north-east coastal reef fish was performed providing some insight to the diet of P. breviuscula. The survey showed it to be a carnivorous benthic feeder of small crustaceans such as amphipods, shrimps, and crabs. This was done via examination of stomach contents. Feeding behavior could not be observed due to the nocturnal nature of this fish.

References

• Froese, Rainer; Pauly, Daniel (eds.) (2006). "Pseudophycis breviuscula" in FishBase. March 2006 version.
• Tony Ayling & Geoffrey Cox, Collins Guide to the Sea Fishes of New Zealand, (William Collins Publishers Ltd, Auckland, New Zealand 1982) ISBN 0-00-216987-8
• http://www.fishbase.de/Summary/speciesSummary.php?ID=2022&AT=Northern+bastard+cod , retrieved 4 March 2015.
• http://www.fishbase.org/Summary/FamilySummary.php?Family=Moridae , retrieved 4 March 2015.
• Willis, T.J. & Anderson, M., (2003), Structure of cryptic fish assemblages: relationships with habitat characteristics and predator density, Marine Ecology Progress Series, Vol. 257, 209-221.
• Russell, B.C., (1983), The food and feeding habits of rocky reef fish of north eastern New Zealand, New Zealand Journal of Marine and Freshwater Research, 17:2, 121-145.
• Paulin, C.D. & Roberts, C.D., (1992), The rockpool fishes of New Zealand, Colourcraft Ltd, Hong Kong.

Pseudophycis breviuscula Pseudophycis generoko animalia da. Arrainen barruko Moridae familian sailkatzen da.

Banaketa

Erreferentziak

• FishBase.org

Ikus, gainera

• Pseudophycis
• Moridae

Pseudophycis breviuscula is een straalvinnige vissensoort uit de familie van diepzeekabeljauwen (Moridae).^[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1846 door Richardson.

Pseudophycis breviuscula, en havslevande medlem av familjen djuphavstorskfiskar som finns kring Australien och Nya Zeeland.

Utseende

En brun till brunskär fisk med ljusare buksida. Stjärt-, anal- och de två (nästan sammanvuxna) ryggfenorna har mörka kanter.^[2] En liten fisk, 25 cm som mest.^[3]

Vanor

Pseudophycis breviuscula är en nattaktiv bottenfisk som förekommer på hårda bottnar över kontinentalhyllan^[2] ner till ett djup av 220 m.^[3]

Kommersiell användning

Ett visst fiske förekommer,^[3] men på grund av artens ringa storlek är den av litet kommersiellt intresse.^[2]

Utbredning

Utbredningsområdet omfattar farvattnen kring Nya Zeeland och Australien från New South Wales till västra Australien och Tasmanien, med tonvikt på de östra delarna.^[3]

Referenser

1. ^ 164788 ”Pseudophycis breviuscula Richardson, 1846” (på engelska). ITIS. http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value= 164788. Läst 3 augusti 2011.
2. ^ [a b c] Daniel M. Cohen, Tadashi lnada, Tomio lwamoto & Nadia Scialabba (1990). ”FAO SPECIES CATALOGUE VOL.10 GADIFORM FISHES OF THE WORLD” (på engelska) (FTP, 787 kB). FAO. sid. 4, 6-7 (10). http://www.fao.org/tempref/docrep/fao/009/t0243e/T0243E44.pdf. Läst 23 december 2017.
3. ^ [a b c d] Luna, Susan M. (6 oktober 2010). ”Pseudophycis breviuscula (Günther, 1863) Northern bastard codling” (på engelska). Fishbase. http://www.fishbase.org/summary/SpeciesSummary.php?genusname=Pseudophycis&speciesname=breviuscula. Läst 3 augusti 2011.

大鱗擬褐鱈，為輻鰭魚綱鱈形目稚鱈科的其中一種，分布於西南太平洋紐西蘭至澳洲新南威爾斯及塔斯馬尼亞島海域，為亞熱帶海水魚，深度0-220公尺，體長可達25公分，棲息在棲息在岩石底質海域，生活習性不明，可做為食用魚。

参考文献

• Froese, Rainer & Daniel Pauly, eds. (2016). Pseudophycis breviuscula in FishBase. 2016年2月版本

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