Generation of transparent goldfish

A transparent goldfish strain that allows researchers to study the morphology and distribution of its cells and tissues in vivo was established. The strain is considered to be especially useful for visualizing the dynamic processes of cell proliferation and juvenile gonadal development in the goldfish in vivo. A relatively transparent variant of the goldfish, Muse, which lacks iridophores, was crossed with an N-ethyl-N-nitrosourea-mutagenized normal goldfish to establish the transparent strain. The strain is highly transparent, and the organs inside body are easily observed in the living fish.