What is "redfin shiner"

The redfin shiner (Lythrurus umbratilis) is a freshwater fish in the family Cyprinidae. The redfin shiner is most commonly found in the Ohio and Mississippi River basins as well as in drainages of the Great Lakes, all of which are in the United States. The diet of the redfin shiner consists mostly of algae and small insects. This species prefers calm water in low- gradient streams over substrates of gravel or sand with some vegetation.