American flagfish (Jordanella floridae) 

These pet fish make quick work of hair algae and they may also eat plants in a planted aquarium.

This algae eater fish is a killifish native to Florida. It received its name because the male fish resembles the American flag, with a large black/blue dot and alternating red and black/blue stripes on its body. It is a common, native fish in Florida that is occasionally found in fish stores.

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