According to lead researcher in the field of ecotoxicology, human medicines that end up in the ecosystem are causing mutations in the male fish that mutate them into females. Professor Charles Tyler, ...

A female fish has been observed undergoing a rare process in which it grew male reproductive organs and impregnated itself, going on to have offspring. In a study published in the Royal Society Open ...

The kisspeptin system is increasingly recognised as a central regulator of reproductive physiology in fish. Unlike mammals, teleosts often harbour two or more kisspeptin genes (e.g. Kiss1 and Kiss2) ...

Research from Australia has found that some species of fish will have higher reproductive capacity because of larger sex organs, under the more acidic oceans of the future. Research from the ...