"Transgenic zebrafish" refers to a special kind of fish that has been genetically modified, or changed, by scientists. They have added or changed some of the fish's genes in a controlled way for scientific purposes. Full definition
His group also worked frantically without an electric pump to change the water in their 125 40 - liter tanks of transgenic zebrafish, which otherwise would have died from lack of oxygen. (sciencemag.org)
The researchers trained transgenic zebrafish expressing a calcium sensitive protein to avoid a mild electric shock using a red LED as cue. (sciencedaily.com)
One of the biggest advantages of the cultured sperm approach is that transgenic zebrafish created in this way carry the inserted, foreign gene in every cell of their bodies, including their germ cells. (genome.gov)