Today is Good Friday, which means those who’ve been practicing a penitent and meat-free Lenten diet are nearing the end of their observance. Are visions of burgers or steak or The District’s manhole ...

Peer into any fishbowl, and you’ll see that pet goldfish and guppies have nimble fins. With a few flicks of these appendages, aquarium swimmers can turn in circles, dive deep down or even bob to the ...

Fish fins aren’t just for swimming. They’re feelers, too. The fins of round gobies can detect textures with a sensitivity similar to that of the pads on monkeys’ fingers, researchers report November 3 ...