killifish: small mostly marine warm-water carp-like schooling fishes; used as bait or aquarium fishes or in mosquito control
cyprinodont: any member of the family Cyprinodontidae
dalton's law: (chemistry and physics) law stating that the pressure exerted by a mixture of gases equals the sum of the partial pressures of the gases in the mixture; the pressure of a gas in a mixture equals the pressure it would exert if it occupied the same volume alone at the same temperature