The Mexican tetra lives in freshwater streams and pools from Mexico up into the southern United States. But these fish also live in cave systems in at least 29 separate places in Mexico, where they ...

Long ago, some saltwater fish adapted to freshwater — and in doing so, developed an extraordinary sense of hearing rivaling our own. By examining a 67-million-year-old fossil, researchers from UC ...

One of the most majestic freshwater fish, Arowanas are known for their long, sleek bodies and graceful swimming style. They have dragon-like appearance, and so they are also commonly called dragon ...

One of the most popular choices for beginner aquarium owners are Guppies. These are small, brightly coloured fish with elegant tails. They’re also peaceful and easy to breed. Guppies thrive in tanks ...

An artist’s reconstruction of the Weberian apparatus in a 67 million-year-old fossil fish. The Weberian structure (gold-colored bones at center) arose from a rib (shown in gray attached to several ...

Twenty-seven specimens of cardinal tetra Paracheirodon axelrodi, 33 rosy tetra Hyphessobrycon copelandi (Characidae), 28 marbled hatchetfish Carnegiella strigata, 26 blackwing hatchetfish Carnegiella ...

Keeping an aquarium at home adds beauty and a sense of calm, while also being a rewarding hobby. It is also an aesthetically pleasing view. However, with animals and pets comes responsibility and ...

Join me as I set out to trap stunning freshwater sharks and introduce them to my home aquarium. Medicare update: Major change sparks alarm from lawmakers Oklahoma emptying prisons of illegal ...

Tetras are one of the most popular and diverse types of freshwater aquarium fish. With more than 150 unique types of tetra fish of varying colors, shapes, and sizes, they make a great addition to any ...