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The common minnow is a small fish which reaches a maximum total length of 14 centimetres (5 + 1 ⁄ 2 in), but is normally around 7 centimetres (3 in) in length. It has 3 spines and 6–8 soft rays in its dorsal fin with 3 spines and 6–8 soft rays in its anal fin.
There are over 177 species of fish in the US state of Oklahoma, at least 7% of which are not native. [1]Species include: Alabama shad (Alosa alabamae); Alligator gar (Atractosteus spatula)
The Northern pikeminnow, Columbia River dace or colloquially Squawfish (Ptychocheilus oregonensis) is a large member of the minnow family, Leuciscidae. [2] This predatory freshwater fish is native to northwestern North America, ranging from the Nass River basin to the Columbia River basin. [ 2 ]
This minnow is typically bluish silver on the sides and greenish blue on the back., save for breeding season in which case the male gains a rose colored tail and anal fin. The shiner grows about 5–10 cm (2–4 in) within one year and reach a size of 13 cm (5.1 in) at adulthood. [5] Notropis potteri is known as the chub shiner.
The plains minnow (Hybognathus placitus) is one of the 324 fish species found in central United States . It is a large minnow that was once a common bait fish. The plains minnow requires shallow, slow-moving streams to complete its life cycle. Pollution, dams, and introduced sport fish have caused populations to decline. [3]
Semotilus atromaculatus, known as the creek chub or the common creek chub, is a small minnow, a freshwater fish found in the eastern US and Canada.Differing in size and color depending on origin of development, the creek chub can usually be defined by a dark brown body with a black lateral line spanning horizontally across the body.
It is common throughout all streams in the park up to 2,800 feet (850 m) in elevation. It is protected in park habitat. [8] The hogsucker is not a threatened species. It is sympatric with threatened species, however, and efforts to conserve these have benefitted the hogsucker. [8] The northern hogsucker is common throughout most of its wide range.
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]