The fathead minnow is a freshwater fish. Its environment prolongs from Canada to Texas to Virginia and also up to the northeastern part of the United States. These minnows endure a range of ecological conditions such as reduced oxygen. They are discovered in wetlands, ponds, and tiny lakes. They have an olive-grey look, with a stripe along the back and also sides, together with a lighter colored stomach. There is a spot on its dorsal fin. The male has breeding tubes on its snout. They are utilized as feeder fish.
There have actually been numerous research studies done with fathead minnows. Because they are hardy, and recreate in great deals, they are likewise utilized as test fish in research studies to comprehend the effects of chemicals on vertebrate animals. One was a research the effects of reduced pH. While they survived, they did act unpredictably. They would be hyperactive. They would certainly additionally swim close to the surface. And also, they experienced some irregularities through breeding as their heads lessened and they lost some of their brightness. The eggs were additionally less most likely to hatch. In one more occasion, when exposed to livestocks feedlot waste, males were feminized and also women defeminized.