All but two fish from three exhibits perish in what is likely a reaction to a medicine commonly used to fight parasites.
Workers at a Tokyo aquarium are scratching their heads after the deaths of dozens of fish have left just one lonely tuna roaming a once-bustling tank.
The finding could shed light on how animals with backbones first invaded land, researchers say.
The tricky procedure buys a fish more time.
The catch may set a record for the biggest catfish ever caught using a rod and reel.
Thanks to a strong recovery, the small minnow has been removed from the federal list of endangered and threatened animals.
Penguins can only taste two flavors, salty and sour, according to new research that sheds light on why temperature is so important to food appreciation.
The ocean sunfish basks in surface light to regulate its body temperature and prepare for chilly dives.
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