A tiny desert fish survives in a sun-scorched cavern on the edge of extinction. Here’s how it’s offering scientists a rare glimpse into the extremes life can endure. If you ever needed proof that ...

In a new study published in Ichthyological Research, an international team of researchers studied the organs that produce light in Vinciguerria mabahiss, a rare species of fish from the Red Sea. This ...

These three fish are freaks, phantoms and mysteries of the deep. Here’s what we’ve learned from the rare glimpses we’ve had of their lives. The deep sea is one of Earth’s final frontiers. Given its ...

A normal fishing trip turns into a strange surprise when a tiny wild red belly Pacu is caught out of nowhere. The fish looks ...

LAS VEGAS (FOX5) — Earthquakes around the world have rattled the Nevada home of the world’s rarest fish deep in a hole in Nye County. As a result, their numbers have plummeted. Now there is an effort ...

With under 40 pupfish left in the wild, these are possibly the rarest fish on the planet. The Devils Hole pupfish have existed in isolation for thousands of years in an extreme environment where few ...

Habitat loss and water pollution in the early 1900s decimated their numbers, but they have been slowly recovering.