The Bluntnose Minnow (Pimephales notatus) is a common, yet unique fish. These minnows can be found throughout eastern North America. They are habitat generalists, but prefer shallow, clear waters with sand and gravel substrate. Being one of the most abundant species does have its "consequences" though.
Bluntnose are a highly tolerant species that can survive in turbid and polluted waters. As other more sensitive fishes move out or disappear from the system, these little minnows increase. The only other fish that can compete with the tolerance of our Bluntnose is their closely related cousin, the Fathead Minnow. Historically the Bluntnose Minnow was a popular bait option for anglers, but now they aren't a common choice in bait shops.
These small fish are cavity nesters, meaning the female lays adhesive eggs on the underside of rocks, logs, pipes, or any other object that the male picked out. During the breeding season, the male develops spike-like protrusions, known as tubercles, on the front of the head, and a spongy pad forms between the dorsal fin and head. Once the eggs are laid, the female will leave the nest, and the male will then guard the area. The tubercles are thought to perform two tasks: attract females and protect the nest from intruders/other males. The spongy pad allows the male to periodically clean the eggs of debris. Once all the eggs have hatched, the male leaves and the young are left to their own.
Although these are a common fish, they can be quite entertaining. When kept in an aquarium they are full of life and movement, and when under the right conditions you might even be able to catch them in the act of spawning. They make for excellent starters when getting into the hobby, but can pair well with just about any of their companions from where they were caught. Next time you're out in a stream or lake, be sure to keep an eye out for underwater movement because what you could be seeing is a school of Bluntnose Minnows!
Comments