Esociformes
Northern pike (Esox lucius)
Scientific classification
Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Superorder: Protacanthopterygii Order: Esociformes
Families
Esocidae (pikes) Umbridae (mudminnows) Image File history File links Download high resolution version (945x363, 32 KB) en: Northern pike (Esox lucius). ... Binomial name Esox lucius Linnaeus, 1758 The Northern Pike (Esox lucius) is a carnivorous fish of brackish and freshwaters of the northern hemisphere. ... Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Phyla Porifera (sponges) Ctenophora (comb jellies) Cnidaria Placozoa Subregnum Bilateria  Acoelomorpha  Orthonectida  Rhombozoa  Myxozoa  Superphylum Deuterostomia     Chordata (vertebrates, etc. ... Typical Classes Subphylum Urochordata - Tunicates Ascideiacea Thaliacea Larvacea Subphylum Cephalochordata - Lancelets Subphylum Myxini - Hagfishes Subphylum Vertebrata - Vertebrates Petromyzontida - Lampreys Placodermi (extinct) Chondrichthyes - Cartilaginous fishes Acanthodii (extinct) Actinopterygii - Ray-finned fishes Actinistia - Coelacanths Dipnoi - Lungfishes Amphibia - Amphibians Reptilia - Reptiles Aves - Birds Mammalia - Mammals Chordates (phylum Chordata) include the vertebrates, together with... Orders See text The Actinopterygii are the ray-finned fish. ... Species  E. americanus –       grass and redfin pickerels  E. lucius – northern pike  E. masquinongy – muskellunge  E. niger – chain pickerel   – Amur pike Esox Linnaeus, 1758, is a genus of freshwater fish, the only member of the pike family (family Esocidae) of order Esociformes. ... Species  E. americanus –       grass and redfin pickerels  E. lucius – northern pike  E. masquinongy – muskellunge  E. niger – chain pickerel   – Amur pike Esox Linnaeus, 1758, is a genus of freshwater fish, the only member of the pike family (family Esocidae) of order Esociformes. ...

Esociformes is a small order of ray-finned fish, with two families. The pikes of genus Esox give the order its name. Orders See text The Actinopterygii are the ray-finned fish. ... Species  E. americanus –       grass and redfin pickerels  E. lucius – northern pike  E. masquinongy – muskellunge  E. niger – chain pickerel   – Amur pike Esox Linnaeus, 1758, is a genus of freshwater fish, the only member of the pike family (family Esocidae) of order Esociformes. ...

This order is closely related to the Salmoniformes, the two comprising the superorder Protacanthopterygii, and are often included in their order. The esociform fishes first appeared in the mid-Cretaceous -- early products of the Euteleost radiation of that time. Today they are found only in fresh water in North America and Europe. Genera (see text) Salmonidae is a family of ray-finned fish, the only family of order Salmoniformes. ... The Cretaceous period is one of the major divisions of the geologic timescale, reaching from the end of the Jurassic period (about 135 mya) to the beginning of the Paleocene epoch of the Tertiary period (65 mya). ... World map showing location of North America A satellite composite image of North America North America is a continent in the northern hemisphere, bounded on the north by the Arctic Ocean, on the east by the North Atlantic Ocean, on the south by the Caribbean Sea, and on the west... A satellite composite image of Europe Europe is geologically and geographically a peninsula, forming the westernmost part of Eurasia. ...

Most esociforms are classic ambush predators, with long well-muscled torsos, the dorsal and anal fins set well back and opposite each other for rapid acceleration along a straight line. Anatomically, they are characterized by a number of features, including teeth like sharks, absence of an adipose fin; and the absence of breeding tubercules. This snapping turtle is trying to make a meal of a Canada goose, but the goose is too wary. ... Orders See Classification and Shark taxonomy Sharks are a group (superorder Selachimorpha) of fish, with a full cartilaginous skeleton, a streamlined body plan with between 5 and 7 gill slits along the sides (most often) or side of the head (the first modified slit is behind the eye and called... Adipose tissue is an anatomical term for loose connective tissue composed of energy in the form of fat, although it also cushions and insulates the body. ...

References

• "Esociformes". FishBase. Ed. Ranier Froese and Daniel Pauly. October 2004 version. N.p.: FishBase, 2004.
• "Esociformes" (TSN 553131). Integrated Taxonomic Information System. N.p.: Integrated Taxonomic Information System, 2004. Accessed on 8 December 2004.