With 84 species currently described, Characidium may be the most diverse fish genus known to science. This is the conclusion ...

Some fish are healthier than others. The healthiest fish to eat are high in nutrients and low in contaminants.

Lungfish’ would have been a common sight in the Devonian period, about 400 million years ago. Remarkably, six species of this ...

We might not always want to think too hard about it but can be strange to imagine that our fish (or maybe just their ...

The winning and highly commended underwater photography spotlights breathtaking animal behavior, conservation needs and the ...

“If we’re going to save these 15 irreplaceable species and the rest of the natural world, the Fish and Wildlife Service needs a complete culture shift,” said Greenwald. “The agency’s mantra of working ...

A newly discovered bright red fish species could fill the Grumpy Cat-sized hole in the internet’s heart. This new species is named Sueviota aethon, but goes by the common name grumpy dwarfgoby. The ...

A question on Illinois record fish leads to a look at the place of redhorse suckers and other fish in state records.

U.S. Interior Secretary Deb Haaland says the Apache trout has been removed from the federal list of endangered and threatened ...

but these 15 varieties are guaranteed to make visitors want an aquarium of their own. Wild oscars are the default type of oscar fish. The original species of Astronotus ocellatus is native to the ...

With glowing colors and unusual patterns, oscar fish are among the prettiest to keep. Here are 15 types to consider. The oscar fish, a unique-looking fish from South America, is popular in the ...