The doorbell, or "visdeurbel" in Dutch, sends a signal to operators to lift the lock and let the fish pass through. Usually, ...

The research maps biofluorescence across 459 glowing fish species and shows just how varied the colors have become.

Advances in organ and computer models are raising the prospect that some animal experiments could be eliminated. But there ...

On March 24, 1989, just after midnight, a massive oil tanker ran aground in one of the most pristine marine environments in ...

This octopus can brood its eggs for nearly four years without eating. Here’s how this biological extreme has reshaped how ...

Freshwater ecosystems are rich but fragile. Of the new fish species discovered, many are critically endangered ...

When a species lives in two distinct types of habitats, individuals with traits better suited to each habitat will thrive and reproduce, naturally selecting descendants with those traits. But what ...

For just one or two nights each spring, spotted salamanders emerge from underground and go in search of vernal mating pools.

When a species lives in two distinct types of habitats, individuals with traits better suited to each habitat will thrive and reproduce, naturally selecting descendants with those traits.

A plantation worker photographed this new genus of mammal in New Guinea, thought to have been dead for 6,000 years.

Another conservation group has filed a lawsuit challenging the federal government’s delay in determining critical habitat for wolverines, a federally listed threatened species. It says without a ...

Discover some of the best fish breeds for kids to care for, including guppies, Mickey Mouse platies, neon tetras and zebra danios. These beginner-friendly aquarium fish are hardy, colourful and easy ...