When something strange washes up on the Jersey Shore, beachgoers are bound to notice. The latest reports this July on our coast: a tiny orange fish usually found in tropical environments. Some have ...

The cardinal tetra is one of the most popular pet fish in the world. They look like little red and blue sequins. You've ...

NEW YORK (AP) — You can see right through this little aquarium fish from Thailand: Its skin is almost completely transparent. But when the light hits it just right, its body flickers with shimmering ...

A tiny, yellow-and-orange juvenile warty frogfish rests on a coral-like object in a habitat at Chicago's Shedd Aquarium. A tiny fish is making big waves at Shedd Aquarium as animal caretakers ...

Adventure Aquarium welcomed a bouncing baby boy this month. A penguin chick was born Feb. 15 to parents Sheila and Spud. Weighing in at 37 grams, or less than a pound, he's a little guy — which is to ...

Australia's tropical fish are heading south into cooler waters. These fish are not just visiting. They are settling into the milder "temperate" reefs that used to be too cold for them. As they do, ...