Facts, Development and Scientific Studies


  • Zebrafish do not have lungs

  • Danio Rerio, is the Zebrafish's scientific name.

  • Can grow up to 4-5 centimeters.

  • The female can lay up to 200 eggs a day.

  • The Zebrafish can live in captivity for 2 years and can live in ideal conditions for 5 years.

  • They are found from Native to Southeast Asia.

  • The Zebrafish can regenerate its skin, heart, and even its brain.

  • The break of daylight triggers mating the Zebrafish.

  • Females are more pink than the males are.

  • The Zebrafish is a small, robust fish.

  • Danio rerio is a model organism for studies of vertebrate development.


No other vertebrate model organism’s popularity has grown as quickly as the Zebrafish. The reputation of this small tropical fish was firmly established during the nineties of the previous century when big genetic screening projects in the US and Europe led to the discovery of hundreds of mutants that gave novel insights into the functions of essential human developmental genes.

Pictures of Zebrafish

Scientific Studies

These and other genetic studies confirmed that the Zebrafish is a good predictive model for human development and disease. The second reason for the rapid expansion of Zebrafish colonies in research labs is the optical transparency of Zebrafish embryos. This property makes them ideally suited for microscopic imaging of life processes. Fluorescent markers can be used to ‘light up’ different cells and organ in the. The Zebrafish is used in research for tuberculosis.

Zebrafish egg development over 24 hours