Flagfish

Flagfish
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Cyprinodontiformes
Family: Cyprinodontidae
Genus: Jordanella
Goode & T. H. Bean, 1879
Species: J. floridae
Binomial name
Jordanella floridae
Goode & T. H. Bean, 1879

The flagfish or American flagfish (Jordanella floridae) is a pupfish 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. They make quick work of hair algae and they may also eat plants in a planted aquarium.

4 vials of larvae of Jordanella after one month in normal water for the first batch, and in water containing traces of mercury (respectively 0.6PPB and 2.5PPB and 1.26PPB (parts per billion) of methylmercury for the 3 bottles at right.
American Photography archive (1973) "National water quality laboratory" (USA)

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