Although the terms reactant and reagent are often used interchangeably, a reactant is more specifically a substance that is consumed in the course of a chemical reaction. Solvents, although they are involved in the reaction, are usually not referred to as reactants.
Animals that live in water, usually called aquatic animals, include fish, cetaceans, certain types of turtles and other reptiles, and amphibians. There are also a number of semiaquatic animals, such as alligators, hippopotamuses and penguins, that depend on and live in water most of the time. Continue Reading.
Water Fleas â Crustaceans of the Order Cladocera. Water fleas under the order Cladocera have the scientific name of Daphnia ambigua which is the most common genus of the species. About 600 species under the order Cladocera has been identified although so much more are still unrecognized. They belong to the large group of âjointed limbâ animals which mostly live in water.