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The redfin pickerel (Esox americanus americanus) is a subspecies of freshwater fish belonging to the pike family of the order Esociformes.Not to be confused with its close relatives, the grass pickerel and the chain pickerel, this fish is unique in the fact that it has brightly colored red fins. [2]
Esocidae is a family of ray-finned fish in the order Salmoniformes, which contains pike, pickerel, and mudminnows. [1] While the family traditionally only contained the genus Esox, recent genetic and paleontological research have recovered Novumbra and Dallia as members of the family Esocidae, being closer related to Esox than Umbra.
Its body outline resembles that of the northern pike (E. lucius). Unlike northern pike, however, the opercles and cheeks of chain pickerel are entirely scaled. [5] It may reach up to 78.7 centimetres (31.0 in) long only on rare occasions. [8] The average size for chain pickerel, however, is 24 in (61 cm) and 3 lb (1 1/2 kg).
The northern pike gets its common name from its resemblance to the pole-weapon known as the pike (from the Middle English for 'pointed'). Various other unofficial trivial names are common pike, Lakes pike, great northern pike, great northern, northern (in the U.S. Upper Midwest and in the Canadian provinces of Alberta, Manitoba and Saskatchewan), jackfish, jack, slough shark, snake, slimer ...
A young E. lucius specimen — a "chain pickerel" in the original sense — in an aquarium.. The generic name Esox (pike fish) derives from the Greek ἴσοξ (ee-soks, a large fish) and appears to be cognate with Celtic, Welsh eog and Irish Gaelic iasc (fish), as well as alpine Gaulic *esosk which is consistent with the original indoeuropean root for the common word for fish, *pei(k)sk.
Esox cisalpinus was distinguished from Esox lucius (northern pike) and described scientifically as a new species in 2011 independently by two research groups. The description by Bianco & Delmastro was printed earlier, [4] and the name Esox cisalpinus is therefore accepted, whereas the alternative name published somewhat later by Lucentini et al., Esox flaviae, is considered a junior synonym.
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The Aquitanian pike (Esox aquitanicus) is a species of pike, a predatory fish native from the Charente to the Adour river drainages in the French Great South-West region. [1] [2] It was scientifically described in 2014, but had formerly been regarded as a population of the widespread northern pike (Esox lucius). [2]