All-female species have been long thought of as evolutionary dead ends – but one fish has defied the odds to live without ...

It may sound too bizarre to be true, but the Amazon molly (Poecilia formosa), a fish that inhabits rivers, lakes, and swamps ...

Wyoming relies on other states for cool- and warm-water fish species. A $21 million hatchery expansion aims to change that.

A small fish that lives fast and dies young has given biologists a rare look at one of evolution’s oldest bargains. In the ...

While swimmers and boaters don’t have to fear sharks or giant squid in the Great Lakes watershed, invasive fish the size of large dogs lurk in the freshwater. Invasive carp have wreaked havoc on the ...

There’s something oddly calming about watching fish move through water. No notifications, no noise, no rush – just a small ...

Comparison of female and male killifish The killifish is an emerging model for investigating the genetic architecture of ...

A small fish swimming in the waters of Mexico and Texas has caused a big issue for scientists. The Amazon molly is a species ...

At five o'clock on a misty morning in Xinchang Town of suburban Shanghai, the fog has yet to lift, and the fish pond's surface shimmers with a clear, silvery light.

Arizona officials weigh cool mix releases at Glen Canyon Dam to protect humpback chub, but utilities warn of higher power ...

A pair of University of Regina researchers took advantage of a busy fishing tournament in the southeast to gather valuable data on local fish populations. Mariana Pinho, a master’s student, and Ashley ...

With closures accelerating, the pub is no longer the hub of Irish life, but that could be about to change. John Meagher talks ...