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Gadiformes

(Order)

Overview

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Gadiformes is an order of ray-finned fish, also called the Anacanthini, that includes the cod and its allies. Many major food fish are in this order. They are found in marine waters throughout the world, and there are also a small number of freshwater species.

Common characteristics include the positioning of the pelvic fins (if present), below or in front of the pectoral fins. Gadiformes are , which means that the gas bladder does not have a pneumatic duct. The fins are spineless. Gadiform fish range in size from the codlets, which may be as little as 7 centimetres (2.8 in) in adult length, to the Atlantic cod, Gadus morhua, which reaches up to 2 metres (6.6 ft).1]

Timeline of genera

QuaternaryNeogenePaleogeneCretaceousHolocenePleistocenePlioceneMioceneOligoceneEocenePaleoceneLate CretaceousEarly CretaceousPollachiusLycodopsisMelanogrammusMicrogadusTheragraGadellaPseudophycisBrosmeGadomusGadusParatrisopterusBolbocaraEclipesLaemonemaLepidionMerlangiusMolvaAustrophycisPhysiculusVentrifossaTrichiurichthysBregmaceriniaBrosmiusCoryphaenoidesMicromesistiusTrisopterusPalaeomolvaPseudoranicepsGadiculusGaidropsarusHymenocephalusLotaPhycisSqualogadusTrachyrhinchusEophycisBathygadusCoelorhynchusEulichthysMacruronusTripterophycisBregmacerosMelanonusMerlucciusNezumiaRanicepsUrophycisPalaeogadusTrichuridesRhinocephalusParatichthysRankinianQuaternaryNeogenePaleogeneCretaceousHolocenePleistocenePlioceneMioceneOligoceneEocenePaleoceneLate CretaceousEarly Cretaceous

the pelvic fins (if present), below or in front of the pectoral fins. Gadiformes are , which means that the gas bladder does not have a pneumatic duct. The fins are spineless. Gadiform fish range in size from the codlets, which may be as little as 7 centimetres (2.8 in) in adult length, to the Atlantic cod, Gadus morhua, which reaches up to 2 metres (6.6 ft).1]

Timeline of genera

QuaternaryNeogenePaleogeneCretaceousHolocenePleistocenePlioceneMioceneOligoceneEocenePaleoceneLate CretaceousEarly CretaceousPollachiusLycodopsisMelanogrammusMicrogadusTheragraGadellaPseudophycisBrosmeGadomusGadusParatrisopterusBolbocaraEclipesLaemonemaLepidionMerlangiusMolvaAustrophycisPhysiculusVentrifossaTrichiurichthysBregmaceriniaBrosmiusCoryphaenoidesMicromesistiusTrisopterusPalaeomolvaPseudoranicepsGadiculusGaidropsarusHymenocephalusLotaPhycisSqualogadusTrachyrhinchusEophycisBathygadusCoelorhynchusEulichthysMacruronusTripterophycisBregmacerosMelanonusMerlucciusNezumiaRanicepsUrophycisPalaeogadusTrichuridesRhinocephalusParatichthysRankinianQuaternaryNeogenePaleogeneCretaceousHolocenePleistocenePlioceneMioceneOligoceneEocenePaleoceneLate CretaceousEarly Cretaceous

References

  1. ^ Cohen, Daniel M. (1998). Paxton, J.R. & Eschmeyer, W.N.. ed. Encyclopedia of Fishes. San Diego: Academic Press. pp. 130?132. ISBN 0-12-547665-5. 

External links

Taxonomy

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The Order Gadiformes is further organized into finer groupings including:

Families

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Bregmacerotidae

Codlets are a family, Bregmacerotidae, of cod-like fishes, containing the single genus Bregmaceros. [more]

Euclichthyidae

The Eucla cod, Euclichthys polynemus, is a deepwater marine fish belonging to the cod order (Gadiformes). It is the only species currently classified in the family Euclichthyidae. It is named after the town of Eucla, Western Australia, in whose coastal waters it is found. [more]

Gadidae

Gadidae is a family of marine fish, included in the order Gadiformes. It includes the cod, haddock, whiting, and pollock. [more]

Lotidae

Lotidae is a family of cod-like fishes commonly known as lings or rocklings. [more]

Macrouridae

Grenadiers or rattails (less commonly whiptails) are generally large, brown to black gadiform marine fish of the family Macrouridae. Found at great depths from the Arctic to Antarctic, members of this family are among the most abundant of the deep-sea fishes. [more]

Mcconichthyidae

[more]

Melanonidae

Melanonidae is a family containing just two species of cod-like marine fishes. [more]

Merluccidae

[more]

Merlucciidae

Merlucciidae is a family of cod-like fish, including most hakes. They are native to cold water in the Atlantic and Pacific oceans, and typically found at depths greater than 50 metres (160 ft) in subtropical, temperate, sub-Arctic or sub-Antarctic regions. [more]

Moridae

Moridae is a family of cod-like fishes, known as codlings, hakelings, and moras. [more]

Muraenolepididae

Muraenolepididae is a family of cod-like fish, known as Eel cods. [more]

Phycidae

Phycidae is a family of hakes in the order Gadiformes. They are native to the Atlantic Ocean, but the juveniles of some species enter estuaries. Joseph Nelson classifies this family as the subfamily Phycinae of the cod family, Gadidae. [more]

At least 60 species and subspecies belong to the Family Phycidae.

More info about the Family Phycidae may be found here.

References

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  1. ^ Cohen, Daniel M. (1998). Paxton, J.R. & Eschmeyer, W.N.. ed. Encyclopedia of Fishes. San Diego: Academic Press. pp. 130?132. ISBN 0-12-547665-5. 

Sources

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Last Revised: August 24, 2012
2012/08/24 13:11:17