The U.S. throws 2 billions pounds of fish back in the ocean a year

American fisheries are throwing about 2 billion pounds of fish back in the ocean a year — and a lot of it is edible (even delicious) fish that is already dead or dying, or marine life not intended to be caught for food, including sharks, seals and dolphins. » 3/21/14 11:39am 3/21/14 11:39am

New Discovery Could Explain How Sea Creatures Evolved to Walk on Land

Scientists had long thought that hind legs only evolved after animals crawled up on land. But a new fossil discovery has turned that idea on its head. We're getting closer to fully understanding the evolutionary steps that led animals out of the sea and onto four legs. » 1/15/14 6:20am 1/15/14 6:20am

These new species of biofluorescent fish are beautifully strange

Biofluorescence is what happens when an animal absorbs light, then throws it back out in a different color. It's one of the weirdest and most beautiful traits in the animal kingdom, but now we know it is not among the rarest. Scientists have just identified 180 new biofluorescent fish — and they look pretty amazing. » 1/09/14 11:19am 1/09/14 11:19am

How the Cavefish Lost Its Eyes

Pictured above is a very peculiar fish that lives in a few North American caves. It looks very much like other fish, except in one respect: it has no eyes. The story of its adaptation to life in pitch blackness is one of the weirdest stories in evolutionary history. » 12/12/13 12:43pm 12/12/13 12:43pm

This experiment changed our understanding of parasite resistance

It's common scientific wisdom that parasite resistance comes from repeated exposure to a parasite. But a new study has turned this idea on its head. Guppies who were removed from rivers swarming with parasites actually evolved an improved parasite tolerance in just a few generations. Here's how it happened. » 11/06/13 1:00pm 11/06/13 1:00pm

This African fish can start having babies at 17 days old

The catchily named Nothobranchius kadleci is the fastest-maturing vertebrate species known to science. In just over two weeks, this fish can reach sexual maturity and start laying eggs — and those eggs only need another 15 days before they are ready to hatch. So why does this species need to cram an entire generation… » 9/08/13 11:00am 9/08/13 11:00am

Three "gorgeously ugly" fish looking for mate before they go extinct

The Mangarahara cichlid is a fish native to the rivers of Madagascar — or, at least, it was. It's thought that the fish has gone extinct in the wild, and the only three survivors are in a pair of European zoos. But these three fish are all male, old, ugly... and liable to kill any fish that tries to breed with them. » 5/12/13 2:00pm 5/12/13 2:00pm