The zebrafish, a small minnow-like species, has proven to be a powerful research tool for genetics, developmental biology, toxicology, neuroscience, oncology, drug discovery, metabolism, immunology, cardiovascular disease and function, and many others. One of the newest applications is the use of zebrafish larvae (around one week old) to investigate epilepsy and to screen new pharmaceutical compounds for unintended induction of seizures or for the potential to treat epilepsy.
Why use fish for this type of work? Scientists conducting biomedical research are always searching for ways to improve research methods and follow the principles of 3Rs (reduction, refinement, and replacement). In recent years, some scientists have been accomplishing this through the use of zebrafish - either adults or their developing offspring - as a research model. One of the advantages to zebrafish research is that much of the experimental work can be done in embryos or early-staged larvae without the need to treat or euthanize any adult animals.
Via Global Aqua Link