The zebrafish, Danio rerio, is a tropical freshwater fish belonging to the minnow family (Cyprinidae) of order Cypriniformes. It is a popular aquarium fish, frequently sold under the trade name zebra danio, and is an important vertebrate model organism in scientific research. It is particularly notable for itsregenerative abilities, and has been modified to produce several transgenic strains.
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| Fig. Danio rerio |
The zebrafish is native to the streams of the southeastern Himalayan region, and is found in parts of India, Pakistan, Bangladesh, Nepal, and Burma. The species arose in the Ganges region in eastern India, and commonly inhabits streams, canals, ditches, ponds, and slow-moving or stagnant water bodies, including rice fields. Zebrafish have been introduced to parts of the United States, presumably by deliberate release or by escape from fish farms.
Feeding :
The zebrafish is omnivorous. It primarily eats zooplankton, insects, insect larvae, and phytoplankton, although it can eat a variety of other foods, such as worms and small crustaceans, if its preferred sources are not readily available. Most zebrafish accept common food flakes and tubifex worms in the aquarium.
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