Pollutants affected fish over multiple generations, according to researchers. Pollution from the production of antidepressant medication is altering fish behavior and reproductive traits, highlighting ...

In mosquitofish, of the genus Gambusia, male fish are smaller than females -- sometimes only half the size. Biologists had previously assumed that smaller male mosquitofish had at least some ...

New research on the reproductive habits of zebrafish offers an explanation as to why some animals' bodies repair tissues. The research team previously noticed that male zebrafish regenerate their ...