For the venomous Australian coral reef fish which is also known as zebrafish, see red lionfish. The zebrafish or zebra danio, Danio rerio, is a tropicalfish belonging to the minnow family (Cyprinidae). It is a popular aquarium fish, where it is frequently sold under the trade name zebra danio, and is also an important model organism.
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A model organism (Danio rerio) to study vertebrate biology, physiology and human disease. Its high fecundity and short generation time make it useful for genetic studies as well. Hundreds of mutants resembling human diseases have been identified. Link to Zebrafishwebsite. See also Fugu