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

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

Surreal portraits of classical beauties with fish heads [NSFW]

The notion of the inverted mermaid usually comes up as something of a joke, Hannah Yata's gorgeous and grotesque paintings give us lovely ladies with fish for heads while evoking mythology, Renaissance era painting, and beauty and monstrosity of the natural world. Artful nudity and fish vomit below. » 10/13/13 8:30am 10/13/13 8:30am

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