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Fathead minnows are fractional spawners, meaning they begin spawning when water temperatures approach 18 °C (64 °F) and continue until they drop below that temperature in late summer. Fractional spawning can result in 16 to 26 spawning events per female and an annual fecundity of 6,800 to 10,600 eggs per female.
Feeding time is usually dawn and sunset. The brook stickleback does have active competition mostly from minnows, but feeding times are different, along with diet. [4] Spawning occurs in midsummer. Males secure a territory, build a nest, and mate with females. Males provide protection for the eggs, ward off predators, and usually die later in ...
Generally, minnows breed with the slightest rainfall and within a wide temperature range. Contrary to the long-standing presumptions, climate change poses 'negligible' threat to minnows' reproduction. Minnows are also flexible in attaining pre-spawning fitness, which makes them avoid 'skipped spawning' decisions while facing climatic variabilities.
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Pimephales, commonly known as the bluntnose minnows (a term used locally to refer to Pimephales notatus specifically), is a genus of cyprinid fish found in North America. All of the four species are small fish, with P. notatus being the largest at 11 cm. (about 4.3 in.) These minnows can be found all over North America and are commonly used as ...
Native to Colorado. They inhabit small streams, ponds, and lakes and are very tolerant of most types of water clarity and pH levels. Fathead minnows will eat organic debris, aquatic insects and zooplankton in their daily diet. Fathead minnows can grow up to 4 inches in length but will usually range between 2–3 inches. [10] LC
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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.