Fathead minnows are marketed as feeder fish. A selection called "rosy-red minnows" is usually the kind sold for fish tanks. If utilized in aquariums, they should be in schools of five or 6 or a single fish will end up being territorial and also chase various other species of fish. Fathead minnows are also utilized as bait. You have actually most likely either viewed a fathead minnow in an aquarium, or utilized or seen one while fishing.
The generating period of the fathead minnow flies June via July, with some spawning as early as mid-May, and encompassing early August. They choose a temperature level variety of 50 - 70 degrees Fahrenheit, and spawing happens in temperatures around 64 degrees Fahrenheit. The male takes care of eggs that the female deposits in a nest. Usually, a male fathead minnow will take over a nest site that is currently being used. It decides on sites that already contain eggs, and also the more eggs in the nest, the most likely the existing male will certainly be tested by a brand-new male fathead minnow. This sort of habits is called allopathernal treatment, where one male displaces the various other man. Men aerate the eggs, they get rid of unhealthy eggs, as well as they guard eggs from predators such as crayfish. By "changing out" the men, it enables for greater survival of the eggs, as the new men that take control of are "fresher" and also a lot more fit maybe, to proceed on the task of shielding the eggs. Each male minnow protects the site for 3 to 5 weeks, enabling for a "changing of the guard". The eggs hatch out in approximately five days.