University of Missouri researchers have shown how an all-female fish species called the Amazon molly defies the long-held ...

Polar fish experience lower mortality than tropical fish, allowing them to delay reproduction until later in life when they are larger and can produce more eggs, according to a study by Mariana ...

In times of desperation, female sawtooth sharks have been known to reproduce sans males. For other species, solo reproduction is downright vanilla. blickwinkel / Alamy When it comes to getting ...

It is slimy, mysterious, and one of Europe’s most enigmatic species: the eel. For centuries, researchers have tried to discover where and how these fish reproduce, but to this day, no one knows for ...