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The rod, perch, or pole (sometimes also lug) is a surveyor's tool [1] and unit of length of various historical definitions. In British imperial and US customary units, it is defined as 16 + 1 ⁄ 2 feet, equal to exactly 1 ⁄ 320 of a mile, or 5 + 1 ⁄ 2 yards (a quarter of a surveyor's chain), and is exactly 5.0292 meters.
The pumpkinseed (Lepomis gibbosus), also referred to as sun perch, [4] pond perch, common sunfish, punkie, sunfish, sunny, and kivver, is a small to medium–sized freshwater fish of the genus Lepomis (true sunfishes), from the sunfish family (Centrarchidae) in the order Centrarchiformes. It is endemic to eastern North America.
Johnny darters prefer clear water with sandy and gravelly bottoms. They like slow-moving water, but can be found in moderately cloudy, moving water, as well. [2] They are bottom dwellers and stay on rocks at the bottoms of small ponds and streams with their heads facing into the current. [4]
Perch is a common name for freshwater fish from the genus Perca, which belongs to the family Percidae of the large order Perciformes. The name comes from Greek : πέρκη , romanized : perke , meaning the type species of this genus, the European perch ( P. fluviatilis ).
Perciformes (/ ˈ p ɜːr s ɪ ˌ f ɔːr m iː z /), also called the Acanthopteri, is an order or superorder of ray-finned fish in the clade Percomorpha. Perciformes means " perch -like". Among the well-known members of this group are perches and darters ( Percidae ), and also sea basses and groupers ( Serranidae ).
A study found that this strain of protist produces smaller (13–14.5 micrometres long vs 15–17 micrometres long), yet identically-shaped (narrow pyriform) spores than the original strain of protozoa and affects primarily within red and white muscle fibers and only rarely among the subdermal connective tissue in the trout-perch. [6]
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The family contains more than 200 species in 11 genera. The perches and their relatives are in this family; well-known species include the walleye, sauger, ruffe, and three species of perch. However, small fish known as darters are also a part of this family.