There are many different organisms in aquatic Fathead Minnow found at One of the organisms that brook sticklebacks live and interact with are fathead minnows. In a study done by Mark Abrahams from the department of Zoology at the University of Manitoba, the presence of fathead minnows resulted in stimulated growth in brook sticklebacks. He says this may be because of decrease numbers of fathead minnows in environments with Culaea inconstans.

Brook Sticklebacks are not only predators as mentioned in the nutrition section. They are also prey to many organisms that live in the same environment as them. Some of Brook Trout found at include birds, bigger fish, amphibians, and reptiles. Beside being prey to these organisms, they are also vulnerable to many insects. Some of the larger fish that eat brook sticklebacks are brook trout, largemouth bass, smallmouth bass, northern pike, and walleyes. Herons, kingfishers, and mergansers are a few of the birds that prey upon them.


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