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Fathead minnow (Pimephales promelas), also known as fathead or tuffy, is a species of temperate freshwater fish belonging to the genus Pimephales of the cyprinid family. The natural geographic range extends throughout much of North America, from central Canada south along the Rockies to Texas, and east to Virginia and the Northeastern United States. [2]
Common minnows tend to associate with familiar shoalmates, but new alliances can form when different groups encounter. In an experiment in which common minnows from different groups were introduced to a common environment and monitored, they associated significantly more frequently with familiar individuals than unfamiliar individuals.
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.
White Clouds are generally peaceful and happy to coexist with other fish, as long as they are not put in a tank with larger fish that may eat them. The minnows are usually top or middle-level swimmers and rarely swim close to the bottom of a tank. A typical lifespan can last for five years or longer. [8]
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.
Bluntnose minnows are commonly 6.5 cm (2.6 in) long, with a maximum length of 11 cm (4.3 in). On the first two or three dorsal rays are dark pigmented spots. The scales between the head and the dorsal fin are noted to be smaller than the rest of the scales on the body. [ 3 ]
With over 300 known species, there are more species of minnows native to North America's fresh waters than any other fish. [2] Minnows can be hard to distinguish because many look alike. [3] All minnows have one dorsal fin, ventral fins near the anus, a lateral line system (in most species), and smooth, round cycloid scales. [4]
The golden topminnow's diet does not include vertebrate prey, and the most common food sources are seed shrimp and midge larvae with water beetles and mayflies as minor contributors to its diet. [7] Because of its trophic level position, the golden topminnow also has a wide array of predators that feed on smaller, surface feeding vertebrates.