{i} small fish (like the minnow) that lives both in fresh and briny water (used as an aquarium fish, as bait and in mosquito control)
Any of a few hundred species of egg-laying topminnows (see guppy) in the family Cyprinodontidae. They are found worldwide in brackish, salt, and fresh water, including desert hot springs. Some species grow to 6 in. (15 cm) long. Killifish eat plant or animal material at the water's surface. Many species (e.g., the lyretail) are attractively coloured and are kept in home aquariums. Killifish are also valuable as bait and for mosquito control. Pupfish (Cyprinodon) inhabit California coasts and certain salt-lake shores in the western U.S. Some pupfish are listed as endangered; the Tecopa pupfish (C. nevadensis; 0.6 in. [1.5 cm] long) was declared extinct in 1981
small mostly marine warm-water carp-like schooling fishes; used as bait or aquarium fishes or in mosquito control
Any one of several small American cyprinodont fishes of the genus Fundulus and allied genera